139385504 has 12 divisors (see below), whose sum is σ = 274415274. Its totient is φ = 69692736.

The previous prime is 139385461. The next prime is 139385507. The reversal of 139385504 is 405583931.

It is a happy number.

139385504 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 135955600 + 3429904 = 11660^2 + 1852^2 .

It is not an unprimeable number, because it can be changed into a prime (139385507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2177867 + ... + 2177930.

Almost surely, 2^139385504 is an apocalyptic number.

It is an amenable number.

139385504 is a deficient number, since it is larger than the sum of its proper divisors (135029770).

139385504 is an equidigital number, since it uses as much as digits as its factorization.

139385504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355807 (or 4355799 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 139385504 is about 11806.1638138728. The cubic root of 139385504 is about 518.4885895570.

The spelling of 139385504 in words is "one hundred thirty-nine million, three hundred eighty-five thousand, five hundred four".