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49494949 = 7273101137
BaseRepresentation
bin1011110011001…
…1101110100101
310110010121022021
42330303232211
5100132314244
64524503141
71140462100
oct274635645
9113117267
1049494949
1125a36319
12146aaab1
13a33c56a
146805737
15452a284
hex2f33ba5

49494949 has 24 divisors (see below), whose sum is σ = 59372568. Its totient is φ = 41126400.

The previous prime is 49494917. The next prime is 49494953. The reversal of 49494949 is 94949494.

It can be written as a sum of positive squares in 4 ways, for example, as 23668225 + 25826724 = 4865^2 + 5082^2 .

It is not a de Polignac number, because 49494949 - 25 = 49494917 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

49494949 is an undulating number in base 10.

49494949 is a modest number, since divided by 494949 gives 49 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 49494896 and 49494905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49494979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 361209 + ... + 361345.

It is an arithmetic number, because the mean of its divisors is an integer number (2473857).

Almost surely, 249494949 is an apocalyptic number.

49494949 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

49494949 is a deficient number, since it is larger than the sum of its proper divisors (9877619).

49494949 is a wasteful number, since it uses less digits than its factorization.

49494949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 318 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 52.

The square root of 49494949 is about 7035.2646716382. The cubic root of 49494949 is about 367.1585339178.

The spelling of 49494949 in words is "forty-nine million, four hundred ninety-four thousand, nine hundred forty-nine".

Divisors: 1 7 49 73 101 137 511 707 959 3577 4949 6713 7373 10001 13837 51611 70007 96859 361277 490049 678013 1010101 7070707 49494949