36644943 has 4 divisors (see below), whose sum is σ = 48859928. Its totient is φ = 24429960.

The previous prime is 36644941. The next prime is 36644953. The reversal of 36644943 is 34944663.

It is a happy number.

36644943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 36644943 - 2¹ = 36644941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36644941) 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 3 ways as a sum of consecutive naturals, for example, 6107488 + ... + 6107493.

It is an arithmetic number, because the mean of its divisors is an integer number (12214982).

Almost surely, 2^36644943 is an apocalyptic number.

36644943 is a deficient number, since it is larger than the sum of its proper divisors (12214985).

36644943 is a wasteful number, since it uses less digits than its factorization.

36644943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12214984.

The product of its digits is 186624, while the sum is 39.

The square root of 36644943 is about 6053.5066696915. The cubic root of 36644943 is about 332.1528757165.

The spelling of 36644943 in words is "thirty-six million, six hundred forty-four thousand, nine hundred forty-three".