139392393 has 16 divisors (see below), whose sum is σ = 214290816. Its totient is φ = 78946560.

The previous prime is 139392389. The next prime is 139392403. The reversal of 139392393 is 393293931.

139392393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139392393 - 2² = 139392389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139392313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26998 + ... + 31743.

It is an arithmetic number, because the mean of its divisors is an integer number (13393176).

Almost surely, 2^139392393 is an apocalyptic number.

It is an amenable number.

139392393 is a deficient number, since it is larger than the sum of its proper divisors (74898423).

139392393 is a wasteful number, since it uses less digits than its factorization.

139392393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58864.

The product of its digits is 118098, while the sum is 42.

The square root of 139392393 is about 11806.4555646477. The cubic root of 139392393 is about 518.4971313564.

The spelling of 139392393 in words is "one hundred thirty-nine million, three hundred ninety-two thousand, three hundred ninety-three".