139979952 has 60 divisors (see below), whose sum is σ = 447716880. Its totient is φ = 39993984.

The previous prime is 139979947. The next prime is 139979977. The reversal of 139979952 is 259979931.

139979952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68427 + ... + 70442.

It is an arithmetic number, because the mean of its divisors is an integer number (7461948).

Almost surely, 2^139979952 is an apocalyptic number.

139979952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139979952 is an abundant number, since it is smaller than the sum of its proper divisors (307736928).

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

139979952 is a wasteful number, since it uses less digits than its factorization.

139979952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138890 (or 138881 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 54.

The square root of 139979952 is about 11831.3123532430. The cubic root of 139979952 is about 519.2246234967.

The spelling of 139979952 in words is "one hundred thirty-nine million, nine hundred seventy-nine thousand, nine hundred fifty-two".