49138964 has 18 divisors (see below), whose sum is σ = 100033290. Its totient is φ = 21059472.

The previous prime is 49138919. The next prime is 49138987. The reversal of 49138964 is 46983194.

It can be written as a sum of positive squares in only one way, i.e., 47059600 + 2079364 = 6860^2 + 1442^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125159 + ... + 125550.

It is an arithmetic number, because the mean of its divisors is an integer number (5557405).

Almost surely, 2^49138964 is an apocalyptic number.

It is an amenable number.

49138964 is an abundant number, since it is smaller than the sum of its proper divisors (50894326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49138964 is a wasteful number, since it uses less digits than its factorization.

49138964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250727 (or 250718 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 49138964 is about 7009.9189724276. The cubic root of 49138964 is about 366.2761708673.

The spelling of 49138964 in words is "forty-nine million, one hundred thirty-eight thousand, nine hundred sixty-four".