136809359 has 12 divisors (see below), whose sum is σ = 146200176. Its totient is φ = 127778112.

The previous prime is 136809347. The next prime is 136809389. The reversal of 136809359 is 953908631.

136809359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 136809359 - 2⁸ = 136809103 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 (136809389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40919 + ... + 44135.

It is an arithmetic number, because the mean of its divisors is an integer number (12183348).

Almost surely, 2^136809359 is an apocalyptic number.

136809359 is a deficient number, since it is larger than the sum of its proper divisors (9390817).

136809359 is an equidigital number, since it uses as much as digits as its factorization.

136809359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326 (or 3283 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 136809359 is about 11696.5532957363. The cubic root of 136809359 is about 515.2744432229.

The spelling of 136809359 in words is "one hundred thirty-six million, eight hundred nine thousand, three hundred fifty-nine".