49138929 has 12 divisors (see below), whose sum is σ = 81118336. Its totient is φ = 28079352.

The previous prime is 49138919. The next prime is 49138987. The reversal of 49138929 is 92983194.

It is not a de Polignac number, because 49138929 - 2⁷ = 49138801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49138909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389929 + ... + 390054.

Almost surely, 2^49138929 is an apocalyptic number.

It is an amenable number.

49138929 is a deficient number, since it is larger than the sum of its proper divisors (31979407).

49138929 is a wasteful number, since it uses less digits than its factorization.

49138929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779996 (or 779993 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 49138929 is about 7009.9164759646. The cubic root of 49138929 is about 366.2760839053.

The spelling of 49138929 in words is "forty-nine million, one hundred thirty-eight thousand, nine hundred twenty-nine".