139432208 has 20 divisors (see below), whose sum is σ = 272216208. Its totient is φ = 69182880.

The previous prime is 139432207. The next prime is 139432211. The reversal of 139432208 is 802234931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (139432207) 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, 31166 + ... + 35357.

Almost surely, 2^139432208 is an apocalyptic number.

It is an amenable number.

139432208 is a deficient number, since it is larger than the sum of its proper divisors (132784000).

139432208 is a wasteful number, since it uses less digits than its factorization.

139432208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66662 (or 66656 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 139432208 is about 11808.1415980670. The cubic root of 139432208 is about 518.5464932037.

The spelling of 139432208 in words is "one hundred thirty-nine million, four hundred thirty-two thousand, two hundred eight".