139163964 has 24 divisors (see below), whose sum is σ = 326081280. Its totient is φ = 46192944.

The previous prime is 139163909. The next prime is 139163971. The reversal of 139163964 is 469361931.

139163964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21394 + ... + 27129.

It is an arithmetic number, because the mean of its divisors is an integer number (13586720).

Almost surely, 2^139163964 is an apocalyptic number.

It is an amenable number.

139163964 is an abundant number, since it is smaller than the sum of its proper divisors (186917316).

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

139163964 is a wasteful number, since it uses less digits than its factorization.

139163964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48769 (or 48767 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 139163964 is about 11796.7776956252. Note that the first 3 decimals coincide. The cubic root of 139163964 is about 518.2137477961.

The spelling of 139163964 in words is "one hundred thirty-nine million, one hundred sixty-three thousand, nine hundred sixty-four".