36639844 has 12 divisors (see below), whose sum is σ = 64582000. Its totient is φ = 18187848.

The previous prime is 36639839. The next prime is 36639859. The reversal of 36639844 is 44893663.

It is a self number, because there is not a number n which added to its sum of digits gives 36639844.

It is an unprimeable number.

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, 32394 + ... + 33505.

Almost surely, 2^36639844 is an apocalyptic number.

It is an amenable number.

36639844 is a deficient number, since it is larger than the sum of its proper divisors (27942156).

36639844 is a wasteful number, since it uses less digits than its factorization.

36639844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66042 (or 66040 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 36639844 is about 6053.0854941922. The cubic root of 36639844 is about 332.1374690789.

The spelling of 36639844 in words is "thirty-six million, six hundred thirty-nine thousand, eight hundred forty-four".