137759689 has 4 divisors (see below), whose sum is σ = 138135424. Its totient is φ = 137383956.

The previous prime is 137759669. The next prime is 137759693. The reversal of 137759689 is 986957731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137759689 - 2²¹ = 135662537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137759639) 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, 187317 + ... + 188050.

It is an arithmetic number, because the mean of its divisors is an integer number (34533856).

Almost surely, 2^137759689 is an apocalyptic number.

It is an amenable number.

137759689 is a deficient number, since it is larger than the sum of its proper divisors (375735).

137759689 is an equidigital number, since it uses as much as digits as its factorization.

137759689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375734.

The product of its digits is 2857680, while the sum is 55.

The square root of 137759689 is about 11737.1073523249. The cubic root of 137759689 is about 516.4647888838.

The spelling of 137759689 in words is "one hundred thirty-seven million, seven hundred fifty-nine thousand, six hundred eighty-nine".