139899882 has 16 divisors (see below), whose sum is σ = 280758240. Its totient is φ = 46473552.

The previous prime is 139899841. The next prime is 139899883. The reversal of 139899882 is 288998931.

It is a super-2 number, since 2×139899882² = 39143953967227848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139899883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38032 + ... + 41547.

It is an arithmetic number, because the mean of its divisors is an integer number (17547390).

Almost surely, 2^139899882 is an apocalyptic number.

139899882 is an abundant number, since it is smaller than the sum of its proper divisors (140858358).

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

139899882 is a wasteful number, since it uses less digits than its factorization.

139899882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79877.

The product of its digits is 2239488, while the sum is 57.

The square root of 139899882 is about 11827.9280518610. The cubic root of 139899882 is about 519.1256039717.

It can be divided in two parts, 13989 and 9882, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 139899882 in words is "one hundred thirty-nine million, eight hundred ninety-nine thousand, eight hundred eighty-two".