138892944 has 40 divisors (see below), whose sum is σ = 359377792. Its totient is φ = 46224000.

The previous prime is 138892921. The next prime is 138892951. The reversal of 138892944 is 449298831.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 138892893 and 138892902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34122 + ... + 37974.

Almost surely, 2^138892944 is an apocalyptic number.

It is an amenable number.

138892944 is an abundant number, since it is smaller than the sum of its proper divisors (220484848).

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

138892944 is a wasteful number, since it uses less digits than its factorization.

138892944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615 (or 4609 counting only the distinct ones).

The product of its digits is 497664, while the sum is 48.

The square root of 138892944 is about 11785.2850623139. The cubic root of 138892944 is about 517.8771243458.

The spelling of 138892944 in words is "one hundred thirty-eight million, eight hundred ninety-two thousand, nine hundred forty-four".