137349979 has 16 divisors (see below), whose sum is σ = 151066720. Its totient is φ = 124104960.

The previous prime is 137349967. The next prime is 137350007. The reversal of 137349979 is 979943731.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137349979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137340979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300319 + ... + 300775.

It is an arithmetic number, because the mean of its divisors is an integer number (9441670).

Almost surely, 2^137349979 is an apocalyptic number.

137349979 is a deficient number, since it is larger than the sum of its proper divisors (13716741).

137349979 is a wasteful number, since it uses less digits than its factorization.

137349979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its digits is 1285956, while the sum is 52.

The square root of 137349979 is about 11719.6407368144. The cubic root of 137349979 is about 515.9522758478.

The spelling of 137349979 in words is "one hundred thirty-seven million, three hundred forty-nine thousand, nine hundred seventy-nine".