137479689 has 6 divisors (see below), whose sum is σ = 198581786. Its totient is φ = 91653120.

The previous prime is 137479673. The next prime is 137479703. The reversal of 137479689 is 986974731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 112529664 + 24950025 = 10608^2 + 4995^2 .

It is not a de Polignac number, because 137479689 - 2⁴ = 137479673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137479609) 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, 7637752 + ... + 7637769.

Almost surely, 2^137479689 is an apocalyptic number.

It is an amenable number.

137479689 is a deficient number, since it is larger than the sum of its proper divisors (61102097).

137479689 is a wasteful number, since it uses less digits than its factorization.

137479689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15275527 (or 15275524 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 137479689 is about 11725.1733036233. The cubic root of 137479689 is about 516.1146423659.

It can be divided in two parts, 13747 and 9689, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 137479689 in words is "one hundred thirty-seven million, four hundred seventy-nine thousand, six hundred eighty-nine".