974339521 has 4 divisors (see below), whose sum is σ = 983799232. Its totient is φ = 964879812.

The previous prime is 974339453. The next prime is 974339549. The reversal of 974339521 is 125933479.

974339521 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 a cyclic number.

It is not a de Polignac number, because 974339521 - 2²³ = 965950913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (974339591) 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, 4729701 + ... + 4729906.

It is an arithmetic number, because the mean of its divisors is an integer number (245949808).

Almost surely, 2^974339521 is an apocalyptic number.

It is an amenable number.

974339521 is a deficient number, since it is larger than the sum of its proper divisors (9459711).

974339521 is a wasteful number, since it uses less digits than its factorization.

974339521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9459710.

The product of its digits is 204120, while the sum is 43.

The square root of 974339521 is about 31214.4120719901. The cubic root of 974339521 is about 991.3722835846.

The spelling of 974339521 in words is "nine hundred seventy-four million, three hundred thirty-nine thousand, five hundred twenty-one".