8374907921 has 8 divisors (see below), whose sum is σ = 8488339200. Its totient is φ = 8261906400.

The previous prime is 8374907911. The next prime is 8374907923. The reversal of 8374907921 is 1297094738.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8374907921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8374907921.

It is not an unprimeable number, because it can be changed into a prime (8374907923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68105 + ... + 146246.

It is an arithmetic number, because the mean of its divisors is an integer number (1061042400).

Almost surely, 2^8374907921 is an apocalyptic number.

It is an amenable number.

8374907921 is a deficient number, since it is larger than the sum of its proper divisors (113431279).

8374907921 is a wasteful number, since it uses less digits than its factorization.

8374907921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214879.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 8374907921 is about 91514.5230059142. The cubic root of 8374907921 is about 2030.7666077421.

The spelling of 8374907921 in words is "eight billion, three hundred seventy-four million, nine hundred seven thousand, nine hundred twenty-one".