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4999989 = 31727379
BaseRepresentation
bin10011000100101100110101
3100102000200210
4103010230311
52234444424
6255100033
760333141
oct23045465
910360623
104999989
112905625
121811619
131060a97
14942221
1568b729
hex4c4b35

4999989 has 24 divisors (see below), whose sum is σ = 7269760. Its totient is φ = 3055104.

The previous prime is 4999963. The next prime is 4999999. The reversal of 4999989 is 9899994.

It is not a de Polignac number, because 4999989 - 25 = 4999957 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63252 + ... + 63330.

Almost surely, 24999989 is an apocalyptic number.

It is an amenable number.

4999989 is a deficient number, since it is larger than the sum of its proper divisors (2269771).

4999989 is a wasteful number, since it uses less digits than its factorization.

4999989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 172 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 57.

The square root of 4999989 is about 2236.0655178237. The cubic root of 4999989 is about 170.9974692693.

The spelling of 4999989 in words is "four million, nine hundred ninety-nine thousand, nine hundred eighty-nine".

Divisors: 1 3 17 51 73 79 219 237 289 867 1241 1343 3723 4029 5767 17301 21097 22831 63291 68493 98039 294117 1666663 4999989