139792408 has 16 divisors (see below), whose sum is σ = 299555280. Its totient is φ = 59911008.

The previous prime is 139792399. The next prime is 139792427. The reversal of 139792408 is 804297931.

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, 1248091 + ... + 1248202.

It is an arithmetic number, because the mean of its divisors is an integer number (18722205).

Almost surely, 2^139792408 is an apocalyptic number.

It is an amenable number.

139792408 is an abundant number, since it is smaller than the sum of its proper divisors (159762872).

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

139792408 is a wasteful number, since it uses less digits than its factorization.

139792408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496306 (or 2496302 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 139792408 is about 11823.3839487686. The cubic root of 139792408 is about 518.9926355530.

The spelling of 139792408 in words is "one hundred thirty-nine million, seven hundred ninety-two thousand, four hundred eight".