137999880 has 96 divisors (see below), whose sum is σ = 474903000. Its totient is φ = 34633728.

The previous prime is 137999843. The next prime is 137999881. The reversal of 137999880 is 88999731.

It can be written as a sum of positive squares in 4 ways, for example, as 137874564 + 125316 = 11742^2 + 354^2 .

It is not an unprimeable number, because it can be changed into a prime (137999881) 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, 5155 + ... + 17394.

Almost surely, 2^137999880 is an apocalyptic number.

137999880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137999880 is an abundant number, since it is smaller than the sum of its proper divisors (336903120).

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

137999880 is a wasteful number, since it uses less digits than its factorization.

137999880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22583 (or 22576 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 137999880 is about 11747.3350169304. The cubic root of 137999880 is about 516.7647754494.

The spelling of 137999880 in words is "one hundred thirty-seven million, nine hundred ninety-nine thousand, eight hundred eighty".