7973774979 has 16 divisors (see below), whose sum is σ = 11313676800. Its totient is φ = 4978005120.

The previous prime is 7973774971. The next prime is 7973774981. The reversal of 7973774979 is 9794773797.

It is not a de Polignac number, because 7973774979 - 2³ = 7973774971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7973774971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382687 + ... + 402984.

It is an arithmetic number, because the mean of its divisors is an integer number (707104800).

Almost surely, 2^7973774979 is an apocalyptic number.

7973774979 is a deficient number, since it is larger than the sum of its proper divisors (3339901821).

7973774979 is a wasteful number, since it uses less digits than its factorization.

7973774979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785890.

The product of its digits is 147027636, while the sum is 69.

The square root of 7973774979 is about 89295.9964332108. The cubic root of 7973774979 is about 1997.8121891979.

The spelling of 7973774979 in words is "seven billion, nine hundred seventy-three million, seven hundred seventy-four thousand, nine hundred seventy-nine".