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49947841 = 73684217
BaseRepresentation
bin1011111010001…
…0010011000001
310110222121120001
42332202103001
5100241312331
64542320001
71144356346
oct276422301
9113877501
1049947841
1126215609
1214889001
13a46a748
1468c27cd
1545b9561
hex2fa24c1

49947841 has 4 divisors (see below), whose sum is σ = 50632132. Its totient is φ = 49263552.

The previous prime is 49947839. The next prime is 49947869. The reversal of 49947841 is 14874994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14874994 = 27437497.

It can be written as a sum of positive squares in 2 ways, for example, as 38489616 + 11458225 = 6204^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 49947841 - 21 = 49947839 is a prime.

It is a super-2 number, since 2×499478412 = 4989573641122562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49947791 and 49947800.

It is not an unprimeable number, because it can be changed into a prime (49947341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342036 + ... + 342181.

It is an arithmetic number, because the mean of its divisors is an integer number (12658033).

Almost surely, 249947841 is an apocalyptic number.

It is an amenable number.

49947841 is a deficient number, since it is larger than the sum of its proper divisors (684291).

49947841 is an equidigital number, since it uses as much as digits as its factorization.

49947841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684290.

The product of its digits is 290304, while the sum is 46.

The square root of 49947841 is about 7067.3786512398. The cubic root of 49947841 is about 368.2750016939.

The spelling of 49947841 in words is "forty-nine million, nine hundred forty-seven thousand, eight hundred forty-one".

Divisors: 1 73 684217 49947841