139039284 has 24 divisors (see below), whose sum is σ = 325211040. Its totient is φ = 46234144.

The previous prime is 139039279. The next prime is 139039297. The reversal of 139039284 is 482930931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8799 + ... + 18854.

It is an arithmetic number, because the mean of its divisors is an integer number (13550460).

Almost surely, 2^139039284 is an apocalyptic number.

It is an amenable number.

139039284 is an abundant number, since it is smaller than the sum of its proper divisors (186171756).

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

139039284 is a wasteful number, since it uses less digits than its factorization.

139039284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28079 (or 28077 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 139039284 is about 11791.4920175523. The cubic root of 139039284 is about 518.0589419271.

The spelling of 139039284 in words is "one hundred thirty-nine million, thirty-nine thousand, two hundred eighty-four".