139928984 has 16 divisors (see below), whose sum is σ = 282549120. Its totient is φ = 64582560.

The previous prime is 139928969. The next prime is 139928993. The reversal of 139928984 is 489829931.

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, 672632 + ... + 672839.

It is an arithmetic number, because the mean of its divisors is an integer number (17659320).

Almost surely, 2^139928984 is an apocalyptic number.

It is an amenable number.

139928984 is an abundant number, since it is smaller than the sum of its proper divisors (142620136).

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

139928984 is a wasteful number, since it uses less digits than its factorization.

139928984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345490 (or 1345486 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 53.

The square root of 139928984 is about 11829.1582118086. The cubic root of 139928984 is about 519.1615976782.

The spelling of 139928984 in words is "one hundred thirty-nine million, nine hundred twenty-eight thousand, nine hundred eighty-four".