9372921 has 4 divisors (see below), whose sum is σ = 12497232. Its totient is φ = 6248612.

The previous prime is 9372911. The next prime is 9372931. The reversal of 9372921 is 1292739.

9372921 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (9372911) and next prime (9372931).

It is a cyclic number.

It is not a de Polignac number, because 9372921 - 2¹⁰ = 9371897 is a prime.

It is a Curzon number.

9372921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9372911) 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, 1562151 + ... + 1562156.

It is an arithmetic number, because the mean of its divisors is an integer number (3124308).

Almost surely, 2^9372921 is an apocalyptic number.

It is an amenable number.

9372921 is a deficient number, since it is larger than the sum of its proper divisors (3124311).

9372921 is a wasteful number, since it uses less digits than its factorization.

9372921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124310.

The product of its digits is 6804, while the sum is 33.

The square root of 9372921 is about 3061.5226603767. The cubic root of 9372921 is about 210.8425785375.

The spelling of 9372921 in words is "nine million, three hundred seventy-two thousand, nine hundred twenty-one".