136993899 has 16 divisors (see below), whose sum is σ = 209537280. Its totient is φ = 77988000.

The previous prime is 136993897. The next prime is 136993903. The reversal of 136993899 is 998399631.

It is not a de Polignac number, because 136993899 - 2¹ = 136993897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136993897) 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 15 ways as a sum of consecutive naturals, for example, 6477 + ... + 17774.

It is an arithmetic number, because the mean of its divisors is an integer number (13096080).

Almost surely, 2^136993899 is an apocalyptic number.

136993899 is a deficient number, since it is larger than the sum of its proper divisors (72543381).

136993899 is a wasteful number, since it uses less digits than its factorization.

136993899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24530.

The product of its digits is 2834352, while the sum is 57.

The square root of 136993899 is about 11704.4392860145. The cubic root of 136993899 is about 515.5060210035.

The spelling of 136993899 in words is "one hundred thirty-six million, nine hundred ninety-three thousand, eight hundred ninety-nine".