9079921 has 4 divisors (see below), whose sum is σ = 9614052. Its totient is φ = 8545792.

The previous prime is 9079909. The next prime is 9079943. The reversal of 9079921 is 1299709.

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 4669921 + 4410000 = 2161^2 + 2100^2 .

It is a cyclic number.

It is not a de Polignac number, because 9079921 - 2⁷ = 9079793 is a prime.

It is a Duffinian number.

9079921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9089921) 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, 267040 + ... + 267073.

It is an arithmetic number, because the mean of its divisors is an integer number (2403513).

Almost surely, 2^9079921 is an apocalyptic number.

It is an amenable number.

9079921 is a deficient number, since it is larger than the sum of its proper divisors (534131).

9079921 is a wasteful number, since it uses less digits than its factorization.

9079921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534130.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 9079921 is about 3013.2907261000. The cubic root of 9079921 is about 208.6222812274.

It can be divided in two parts, 9079 and 921, that added together give a 4-th power (10000 = 10⁴).

The spelling of 9079921 in words is "nine million, seventy-nine thousand, nine hundred twenty-one".