139888932 has 24 divisors (see below), whose sum is σ = 327768672. Its totient is φ = 46435200.

The previous prime is 139888913. The next prime is 139888943. The reversal of 139888932 is 239888931.

It is a super-2 number, since 2×139888932² = 39137826592201248, which contains 22 as substring.

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, 21294 + ... + 27077.

It is an arithmetic number, because the mean of its divisors is an integer number (13657028).

Almost surely, 2^139888932 is an apocalyptic number.

139888932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139888932 is an abundant number, since it is smaller than the sum of its proper divisors (187879740).

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

139888932 is a wasteful number, since it uses less digits than its factorization.

139888932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48619 (or 48617 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 139888932 is about 11827.4651553069. The cubic root of 139888932 is about 519.1120595865.

Subtracting 139888932 from its reverse (239888931), we obtain a palindrome (99999999).

The spelling of 139888932 in words is "one hundred thirty-nine million, eight hundred eighty-eight thousand, nine hundred thirty-two".