8974009021 has 4 divisors (see below), whose sum is σ = 8974201600. Its totient is φ = 8973816444.

The previous prime is 8974009019. The next prime is 8974009043. The reversal of 8974009021 is 1209004798.

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 8974009021 - 2¹ = 8974009019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8974009321) 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, 22270 + ... + 135808.

It is an arithmetic number, because the mean of its divisors is an integer number (2243550400).

Almost surely, 2^8974009021 is an apocalyptic number.

It is an amenable number.

8974009021 is a deficient number, since it is larger than the sum of its proper divisors (192579).

8974009021 is a wasteful number, since it uses less digits than its factorization.

8974009021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192578.

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

The square root of 8974009021 is about 94731.2462759780. The cubic root of 8974009021 is about 2078.0795437325.

The spelling of 8974009021 in words is "eight billion, nine hundred seventy-four million, nine thousand, twenty-one".