139623208 has 16 divisors (see below), whose sum is σ = 264387060. Its totient is φ = 69120000.

The previous prime is 139623203. The next prime is 139623241. The reversal of 139623208 is 802326931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 91431844 + 48191364 = 9562^2 + 6942^2 .

It is a super-2 number, since 2×139623208² = 38989280424422528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139623203) 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, 85593 + ... + 87208.

Almost surely, 2^139623208 is an apocalyptic number.

It is an amenable number.

139623208 is a deficient number, since it is larger than the sum of its proper divisors (124763852).

139623208 is a wasteful number, since it uses less digits than its factorization.

139623208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172908 (or 172904 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 139623208 is about 11816.2264704092. The cubic root of 139623208 is about 518.7831606421.

The spelling of 139623208 in words is "one hundred thirty-nine million, six hundred twenty-three thousand, two hundred eight".