139408356 has 12 divisors (see below), whose sum is σ = 325286192. Its totient is φ = 46469448.

The previous prime is 139408343. The next prime is 139408387. The reversal of 139408356 is 653804931.

139408356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 5808670 + ... + 5808693.

Almost surely, 2^139408356 is an apocalyptic number.

It is an amenable number.

139408356 is an abundant number, since it is smaller than the sum of its proper divisors (185877836).

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

139408356 is a wasteful number, since it uses less digits than its factorization.

139408356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11617370 (or 11617368 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 139408356 is about 11807.1315737566. The cubic root of 139408356 is about 518.5169230959.

The spelling of 139408356 in words is "one hundred thirty-nine million, four hundred eight thousand, three hundred fifty-six".