139730392 has 32 divisors (see below), whose sum is σ = 276756480. Its totient is φ = 66034080.

The previous prime is 139730377. The next prime is 139730411. The reversal of 139730392 is 293037931.

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, 4113 + ... + 17215.

It is an arithmetic number, because the mean of its divisors is an integer number (8648640).

Almost surely, 2^139730392 is an apocalyptic number.

It is an amenable number.

139730392 is a deficient number, since it is larger than the sum of its proper divisors (137026088).

139730392 is a wasteful number, since it uses less digits than its factorization.

139730392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13183 (or 13179 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 139730392 is about 11820.7610584091. The cubic root of 139730392 is about 518.9158774313.

The spelling of 139730392 in words is "one hundred thirty-nine million, seven hundred thirty thousand, three hundred ninety-two".