139376988 has 18 divisors (see below), whose sum is σ = 352314144. Its totient is φ = 46458984.

The previous prime is 139376983. The next prime is 139377001. The reversal of 139376988 is 889673931.

139376988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139376983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1935756 + ... + 1935827.

It is an arithmetic number, because the mean of its divisors is an integer number (19573008).

Almost surely, 2^139376988 is an apocalyptic number.

139376988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139376988 is an abundant number, since it is smaller than the sum of its proper divisors (212937156).

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

139376988 is a wasteful number, since it uses less digits than its factorization.

139376988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871593 (or 3871588 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 139376988 is about 11805.8031492991. The cubic root of 139376988 is about 518.4780300210.

The spelling of 139376988 in words is "one hundred thirty-nine million, three hundred seventy-six thousand, nine hundred eighty-eight".