139591492 has 12 divisors (see below), whose sum is σ = 246069180. Its totient is φ = 69286016.

The previous prime is 139591477. The next prime is 139591493. The reversal of 139591492 is 294195931.

139591492 is digitally balanced in base 2, 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 2 ways, for example, as 30096196 + 109495296 = 5486^2 + 10464^2 .

It is not an unprimeable number, because it can be changed into a prime (139591493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126817 + ... + 127912.

It is an arithmetic number, because the mean of its divisors is an integer number (20505765).

Almost surely, 2^139591492 is an apocalyptic number.

It is an amenable number.

139591492 is a deficient number, since it is larger than the sum of its proper divisors (106477688).

139591492 is a wasteful number, since it uses less digits than its factorization.

139591492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254870 (or 254868 counting only the distinct ones).

The product of its digits is 87480, while the sum is 43.

The square root of 139591492 is about 11814.8843413721. The cubic root of 139591492 is about 518.7438764071.

It can be divided in two parts, 13959 and 1492, that added together give a palindrome (15451).

The spelling of 139591492 in words is "one hundred thirty-nine million, five hundred ninety-one thousand, four hundred ninety-two".