139884920 has 64 divisors (see below), whose sum is σ = 361843200. Its totient is φ = 47675520.

The previous prime is 139884917. The next prime is 139884931. The reversal of 139884920 is 29488931.

It is a happy number.

139884920 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 15 ways as a sum of consecutive naturals, for example, 48725 + ... + 51515.

It is an arithmetic number, because the mean of its divisors is an integer number (5653800).

Almost surely, 2^139884920 is an apocalyptic number.

139884920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139884920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180921600).

139884920 is an abundant number, since it is smaller than the sum of its proper divisors (221958280).

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

139884920 is a wasteful number, since it uses less digits than its factorization.

139884920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2984 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 139884920 is about 11827.2955488565. The cubic root of 139884920 is about 519.1070968457.

The spelling of 139884920 in words is "one hundred thirty-nine million, eight hundred eighty-four thousand, nine hundred twenty".