137989980 has 72 divisors (see below), whose sum is σ = 434087472. Its totient is φ = 36796032.

The previous prime is 137989931. The next prime is 137990059. The reversal of 137989980 is 89989731.

137989980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9337 + ... + 19056.

Almost surely, 2^137989980 is an apocalyptic number.

137989980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137989980 is an abundant number, since it is smaller than the sum of its proper divisors (296097492).

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

137989980 is a wasteful number, since it uses less digits than its factorization.

137989980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28417 (or 28403 counting only the distinct ones).

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

The square root of 137989980 is about 11746.9136372070. The cubic root of 137989980 is about 516.7524177246.

The spelling of 137989980 in words is "one hundred thirty-seven million, nine hundred eighty-nine thousand, nine hundred eighty".