138970932 has 24 divisors (see below), whose sum is σ = 329583072. Its totient is φ = 45564000.

The previous prime is 138970913. The next prime is 138971009. The reversal of 138970932 is 239079831.

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, 94194 + ... + 95657.

It is an arithmetic number, because the mean of its divisors is an integer number (13732628).

Almost surely, 2^138970932 is an apocalyptic number.

138970932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138970932 is an abundant number, since it is smaller than the sum of its proper divisors (190612140).

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

138970932 is a wasteful number, since it uses less digits than its factorization.

138970932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189919 (or 189917 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 138970932 is about 11788.5933003052. The cubic root of 138970932 is about 517.9740350625.

The spelling of 138970932 in words is "one hundred thirty-eight million, nine hundred seventy thousand, nine hundred thirty-two".