139877892 has 72 divisors (see below), whose sum is σ = 440836032. Its totient is φ = 36331200.

The previous prime is 139877891. The next prime is 139877911. The reversal of 139877892 is 298778931.

It is not an unprimeable number, because it can be changed into a prime (139877891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22459 + ... + 28002.

Almost surely, 2^139877892 is an apocalyptic number.

139877892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139877892 is an abundant number, since it is smaller than the sum of its proper divisors (300958140).

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

139877892 is a wasteful number, since it uses less digits than its factorization.

139877892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50489 (or 50484 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 139877892 is about 11826.9984357824. The cubic root of 139877892 is about 519.0984031620.

It can be divided in two parts, 1 and 39877892, that added together give a palindrome (39877893).

The spelling of 139877892 in words is "one hundred thirty-nine million, eight hundred seventy-seven thousand, eight hundred ninety-two".