8974921 has 4 divisors (see below), whose sum is σ = 8989200. Its totient is φ = 8960644.

The previous prime is 8974913. The next prime is 8974937. The reversal of 8974921 is 1294798.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1294798 = 2 ⋅647399.

It is a cyclic number.

It is not a de Polignac number, because 8974921 - 2³ = 8974913 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8974981) 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, 6151 + ... + 7468.

It is an arithmetic number, because the mean of its divisors is an integer number (2247300).

Almost surely, 2^8974921 is an apocalyptic number.

It is an amenable number.

8974921 is a deficient number, since it is larger than the sum of its proper divisors (14279).

8974921 is a wasteful number, since it uses less digits than its factorization.

8974921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14278.

The product of its digits is 36288, while the sum is 40.

The square root of 8974921 is about 2995.8172507681. The cubic root of 8974921 is about 207.8149935932.

The spelling of 8974921 in words is "eight million, nine hundred seventy-four thousand, nine hundred twenty-one".