36493921 has 4 divisors (see below), whose sum is σ = 37092244. Its totient is φ = 35895600.

The previous prime is 36493909. The next prime is 36493937. The reversal of 36493921 is 12939463.

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

It can be written as a sum of positive squares in 2 ways, for example, as 960400 + 35533521 = 980^2 + 5961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36493921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36493981) 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, 299070 + ... + 299191.

It is an arithmetic number, because the mean of its divisors is an integer number (9273061).

Almost surely, 2^36493921 is an apocalyptic number.

It is an amenable number.

36493921 is a deficient number, since it is larger than the sum of its proper divisors (598323).

36493921 is an equidigital number, since it uses as much as digits as its factorization.

36493921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598322.

The product of its digits is 34992, while the sum is 37.

The square root of 36493921 is about 6041.0198642282. The cubic root of 36493921 is about 331.6959553719.

The spelling of 36493921 in words is "thirty-six million, four hundred ninety-three thousand, nine hundred twenty-one".