136907789 has 4 divisors (see below), whose sum is σ = 139228320. Its totient is φ = 134587260.

The previous prime is 136907767. The next prime is 136907791. The reversal of 136907789 is 987709631.

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 not a de Polignac number, because 136907789 - 2¹⁶ = 136842253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136907189) 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, 1160177 + ... + 1160294.

It is an arithmetic number, because the mean of its divisors is an integer number (34807080).

Almost surely, 2^136907789 is an apocalyptic number.

It is an amenable number.

136907789 is a deficient number, since it is larger than the sum of its proper divisors (2320531).

136907789 is an equidigital number, since it uses as much as digits as its factorization.

136907789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320530.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 136907789 is about 11700.7601889792. The cubic root of 136907789 is about 515.3979881451.

The spelling of 136907789 in words is "one hundred thirty-six million, nine hundred seven thousand, seven hundred eighty-nine".