36639793 has 4 divisors (see below), whose sum is σ = 36661248. Its totient is φ = 36618340.

The previous prime is 36639791. The next prime is 36639803. The reversal of 36639793 is 39793663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 36639793 - 2¹ = 36639791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36639791) by changing a digit.

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, 7921 + ... + 11662.

It is an arithmetic number, because the mean of its divisors is an integer number (9165312).

Almost surely, 2^36639793 is an apocalyptic number.

It is an amenable number.

36639793 is a deficient number, since it is larger than the sum of its proper divisors (21455).

36639793 is a wasteful number, since it uses less digits than its factorization.

36639793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21454.

The product of its digits is 551124, while the sum is 46.

The square root of 36639793 is about 6053.0812814632. The cubic root of 36639793 is about 332.1373149751.

It can be divided in two parts, 3663 and 9793, that added together give a square (13456 = 116²).

The spelling of 36639793 in words is "thirty-six million, six hundred thirty-nine thousand, seven hundred ninety-three".