139915532 has 12 divisors (see below), whose sum is σ = 255498096. Its totient is φ = 66916080.

The previous prime is 139915513. The next prime is 139915541. The reversal of 139915532 is 235519931.

It is a happy number.

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, 760319 + ... + 760502.

It is an arithmetic number, because the mean of its divisors is an integer number (21291508).

Almost surely, 2^139915532 is an apocalyptic number.

It is an amenable number.

139915532 is a deficient number, since it is larger than the sum of its proper divisors (115582564).

139915532 is a wasteful number, since it uses less digits than its factorization.

139915532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520848 (or 1520846 counting only the distinct ones).

The product of its digits is 36450, while the sum is 38.

The square root of 139915532 is about 11828.5896031606. The cubic root of 139915532 is about 519.1449607018.

The spelling of 139915532 in words is "one hundred thirty-nine million, nine hundred fifteen thousand, five hundred thirty-two".