139038984 has 64 divisors (see below), whose sum is σ = 441398400. Its totient is φ = 39724992.

The previous prime is 139038919. The next prime is 139038997. The reversal of 139038984 is 489830931.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44467 + ... + 47490.

It is an arithmetic number, because the mean of its divisors is an integer number (6896850).

Almost surely, 2^139038984 is an apocalyptic number.

139038984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139038984 is an abundant number, since it is smaller than the sum of its proper divisors (302359416).

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

139038984 is a wasteful number, since it uses less digits than its factorization.

139038984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91979 (or 91969 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 139038984 is about 11791.4792965090. The cubic root of 139038984 is about 518.0585693279.

The spelling of 139038984 in words is "one hundred thirty-nine million, thirty-eight thousand, nine hundred eighty-four".