8079097921 has 4 divisors (see below), whose sum is σ = 8430363072. Its totient is φ = 7727832772.

The previous prime is 8079097883. The next prime is 8079097933. The reversal of 8079097921 is 1297909708.

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 8079097921 - 2¹⁵ = 8079065153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8079097991) 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, 175632541 + ... + 175632586.

It is an arithmetic number, because the mean of its divisors is an integer number (2107590768).

Almost surely, 2^8079097921 is an apocalyptic number.

It is an amenable number.

8079097921 is a deficient number, since it is larger than the sum of its proper divisors (351265151).

8079097921 is a wasteful number, since it uses less digits than its factorization.

8079097921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351265150.

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 8079097921 is about 89883.8023283394. The cubic root of 8079097921 is about 2006.5698880705.

The spelling of 8079097921 in words is "eight billion, seventy-nine million, ninety-seven thousand, nine hundred twenty-one".