137089979 has 4 divisors (see below), whose sum is σ = 147635376. Its totient is φ = 126544584.

The previous prime is 137089969. The next prime is 137090033. The reversal of 137089979 is 979980731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 137089979 - 2²⁴ = 120312763 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 137089979.

It is not an unprimeable number, because it can be changed into a prime (137089949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5272679 + ... + 5272704.

It is an arithmetic number, because the mean of its divisors is an integer number (36908844).

Almost surely, 2^137089979 is an apocalyptic number.

137089979 is a deficient number, since it is larger than the sum of its proper divisors (10545397).

137089979 is a wasteful number, since it uses less digits than its factorization.

137089979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10545396.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 137089979 is about 11708.5429921916. The cubic root of 137089979 is about 515.6265087143.

The spelling of 137089979 in words is "one hundred thirty-seven million, eighty-nine thousand, nine hundred seventy-nine".