138899496 has 16 divisors (see below), whose sum is σ = 347248800. Its totient is φ = 46299824.

The previous prime is 138899491. The next prime is 138899539. The reversal of 138899496 is 694998831.

It is not an unprimeable number, because it can be changed into a prime (138899491) 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, 2893716 + ... + 2893763.

It is an arithmetic number, because the mean of its divisors is an integer number (21703050).

Almost surely, 2^138899496 is an apocalyptic number.

It is an amenable number.

138899496 is an abundant number, since it is smaller than the sum of its proper divisors (208349304).

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

138899496 is a wasteful number, since it uses less digits than its factorization.

138899496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787488 (or 5787484 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 57.

The square root of 138899496 is about 11785.5630327957. The cubic root of 138899496 is about 517.8852674942.

The spelling of 138899496 in words is "one hundred thirty-eight million, eight hundred ninety-nine thousand, four hundred ninety-six".