136830939 has 16 divisors (see below), whose sum is σ = 208672512. Its totient is φ = 78126048.

The previous prime is 136830937. The next prime is 136830997. The reversal of 136830939 is 939038631.

It is not a de Polignac number, because 136830939 - 2¹ = 136830937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136830939.

It is not an unprimeable number, because it can be changed into a prime (136830937) 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, 40437 + ... + 43689.

It is an arithmetic number, because the mean of its divisors is an integer number (13042032).

Almost surely, 2^136830939 is an apocalyptic number.

136830939 is a deficient number, since it is larger than the sum of its proper divisors (71841573).

136830939 is a wasteful number, since it uses less digits than its factorization.

136830939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5266.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 136830939 is about 11697.4757533410. The cubic root of 136830939 is about 515.3015345416.

The spelling of 136830939 in words is "one hundred thirty-six million, eight hundred thirty thousand, nine hundred thirty-nine".