139976808 has 32 divisors (see below), whose sum is σ = 350343360. Its totient is φ = 46605440.

The previous prime is 139976801. The next prime is 139976813. The reversal of 139976808 is 808679931.

It is not an unprimeable number, because it can be changed into a prime (139976801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21916 + ... + 27572.

It is an arithmetic number, because the mean of its divisors is an integer number (10948230).

Almost surely, 2^139976808 is an apocalyptic number.

It is an amenable number.

139976808 is an abundant number, since it is smaller than the sum of its proper divisors (210366552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139976808 is a wasteful number, since it uses less digits than its factorization.

139976808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6697 (or 6693 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 139976808 is about 11831.1794847344. The cubic root of 139976808 is about 519.2207361438.

The spelling of 139976808 in words is "one hundred thirty-nine million, nine hundred seventy-six thousand, eight hundred eight".