999999136 has 24 divisors (see below), whose sum is σ = 1986817140. Its totient is φ = 495410688.

The previous prime is 999999131. The next prime is 999999137. The reversal of 999999136 is 631999999.

999999136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 997296400 + 2702736 = 31580^2 + 1644^2 .

It is not an unprimeable number, because it can be changed into a prime (999999131) 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, 139861 + ... + 146836.

Almost surely, 2^999999136 is an apocalyptic number.

It is an amenable number.

999999136 is a deficient number, since it is larger than the sum of its proper divisors (986818004).

999999136 is a wasteful number, since it uses less digits than its factorization.

999999136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286816 (or 286808 counting only the distinct ones).

The product of its digits is 9565938, while the sum is 64.

The square root of 999999136 is about 31622.7629406414. The cubic root of 999999136 is about 999.9997119999. Note that the first 3 decimals are identical.

The spelling of 999999136 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred thirty-six".