137329987 has 6 divisors (see below), whose sum is σ = 143561012. Its totient is φ = 131358612.

The previous prime is 137329963. The next prime is 137330023. The reversal of 137329987 is 789923731.

It is not a de Polignac number, because 137329987 - 2²⁷ = 3112259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137329987.

It is not an unprimeable number, because it can be changed into a prime (137329957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129273 + ... + 130330.

Almost surely, 2^137329987 is an apocalyptic number.

137329987 is a deficient number, since it is larger than the sum of its proper divisors (6231025).

137329987 is an equidigital number, since it uses as much as digits as its factorization.

137329987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259649 (or 259626 counting only the distinct ones).

The product of its digits is 571536, while the sum is 49.

The square root of 137329987 is about 11718.7877786058. The cubic root of 137329987 is about 515.9272414588.

The spelling of 137329987 in words is "one hundred thirty-seven million, three hundred twenty-nine thousand, nine hundred eighty-seven".