7993289972 has 24 divisors (see below), whose sum is σ = 14402230920. Its totient is φ = 3879357440.

The previous prime is 7993289951. The next prime is 7993289999. The reversal of 7993289972 is 2799823997.

It can be written as a sum of positive squares in 4 ways, for example, as 3989690896 + 4003599076 = 63164^2 + 63274^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7993289899 and 7993289908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91397 + ... + 156012.

It is an arithmetic number, because the mean of its divisors is an integer number (600092955).

Almost surely, 2^7993289972 is an apocalyptic number.

It is an amenable number.

7993289972 is a deficient number, since it is larger than the sum of its proper divisors (6408940948).

7993289972 is a wasteful number, since it uses less digits than its factorization.

7993289972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247651 (or 247649 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 65.

The square root of 7993289972 is about 89405.2010343917. The cubic root of 7993289972 is about 1999.4406745921.

The spelling of 7993289972 in words is "seven billion, nine hundred ninety-three million, two hundred eighty-nine thousand, nine hundred seventy-two".