136438964 has 12 divisors (see below), whose sum is σ = 238853664. Its totient is φ = 68195064.

The previous prime is 136438961. The next prime is 136438999. The reversal of 136438964 is 469834631.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136438961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13367 + ... + 21249.

It is an arithmetic number, because the mean of its divisors is an integer number (19904472).

Almost surely, 2^136438964 is an apocalyptic number.

It is an amenable number.

136438964 is a deficient number, since it is larger than the sum of its proper divisors (102414700).

136438964 is a wasteful number, since it uses less digits than its factorization.

136438964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12214 (or 12212 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 136438964 is about 11680.7090538203. The cubic root of 136438964 is about 514.8090082618.

The spelling of 136438964 in words is "one hundred thirty-six million, four hundred thirty-eight thousand, nine hundred sixty-four".