138902936 has 16 divisors (see below), whose sum is σ = 261051000. Its totient is φ = 69289344.

The previous prime is 138902899. The next prime is 138902963. The reversal of 138902936 is 639209831.

138902936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 138902893 and 138902902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16586 + ... + 23513.

Almost surely, 2^138902936 is an apocalyptic number.

It is an amenable number.

138902936 is a deficient number, since it is larger than the sum of its proper divisors (122148064).

138902936 is a wasteful number, since it uses less digits than its factorization.

138902936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40538 (or 40534 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 138902936 is about 11785.7089731590. The cubic root of 138902936 is about 517.8895427932.

The spelling of 138902936 in words is "one hundred thirty-eight million, nine hundred two thousand, nine hundred thirty-six".