9039365921 has 4 divisors (see below), whose sum is σ = 9039631152. Its totient is φ = 9039100692.

The previous prime is 9039365911. The next prime is 9039365927. The reversal of 9039365921 is 1295639309.

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 a de Polignac number, because none of the positive numbers 2^k-9039365921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9039365927) 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, 72371 + ... + 152696.

It is an arithmetic number, because the mean of its divisors is an integer number (2259907788).

Almost surely, 2^9039365921 is an apocalyptic number.

It is an amenable number.

9039365921 is a deficient number, since it is larger than the sum of its proper divisors (265231).

9039365921 is a wasteful number, since it uses less digits than its factorization.

9039365921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265230.

The product of its (nonzero) digits is 393660, while the sum is 47.

The square root of 9039365921 is about 95075.5800455616. The cubic root of 9039365921 is about 2083.1121681438.

The spelling of 9039365921 in words is "nine billion, thirty-nine million, three hundred sixty-five thousand, nine hundred twenty-one".