7994273991 has 16 divisors (see below), whose sum is σ = 11632647168. Its totient is φ = 4843092800.

The previous prime is 7994273981. The next prime is 7994273999. The reversal of 7994273991 is 1993724997.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7994273991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7994273999) 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, 38755 + ... + 132251.

It is an arithmetic number, because the mean of its divisors is an integer number (727040448).

Almost surely, 2^7994273991 is an apocalyptic number.

7994273991 is a deficient number, since it is larger than the sum of its proper divisors (3638373177).

7994273991 is a wasteful number, since it uses less digits than its factorization.

7994273991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96102.

The product of its digits is 7715736, while the sum is 60.

The square root of 7994273991 is about 89410.7040068470. The cubic root of 7994273991 is about 1999.5227186937.

The spelling of 7994273991 in words is "seven billion, nine hundred ninety-four million, two hundred seventy-three thousand, nine hundred ninety-one".