874394521 has 24 divisors (see below), whose sum is σ = 1182921152. Its totient is φ = 628927200.

The previous prime is 874394509. The next prime is 874394531. The reversal of 874394521 is 125493478.

874394521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 874394521 - 2¹⁹ = 873870233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (874394531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28695 + ... + 50716.

Almost surely, 2^874394521 is an apocalyptic number.

It is an amenable number.

874394521 is a deficient number, since it is larger than the sum of its proper divisors (308526631).

874394521 is a wasteful number, since it uses less digits than its factorization.

874394521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79453 (or 79442 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 874394521 is about 29570.1626813246. The cubic root of 874394521 is about 956.2449234014.

The spelling of 874394521 in words is "eight hundred seventy-four million, three hundred ninety-four thousand, five hundred twenty-one".