136902969 has 48 divisors (see below), whose sum is σ = 238298112. Its totient is φ = 74045664.

The previous prime is 136902947. The next prime is 136902973. The reversal of 136902969 is 969209631.

It is a happy number.

It is not a de Polignac number, because 136902969 - 2⁸ = 136902713 is a prime.

It is a super-2 number, since 2×136902969² = 37484845842029922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (136912969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 154602 + ... + 155484.

It is an arithmetic number, because the mean of its divisors is an integer number (4964544).

Almost surely, 2^136902969 is an apocalyptic number.

It is an amenable number.

136902969 is a deficient number, since it is larger than the sum of its proper divisors (101395143).

136902969 is a wasteful number, since it uses less digits than its factorization.

136902969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026 (or 1023 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 136902969 is about 11700.5542176429. The cubic root of 136902969 is about 515.3919396763.

The spelling of 136902969 in words is "one hundred thirty-six million, nine hundred two thousand, nine hundred sixty-nine".