7993993996 has 6 divisors (see below), whose sum is σ = 13989489500. Its totient is φ = 3996996996.

The previous prime is 7993993961. The next prime is 7993994009. The reversal of 7993993996 is 6993993997.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999249246 + ... + 999249253.

Almost surely, 2^7993993996 is an apocalyptic number.

It is an amenable number.

7993993996 is a deficient number, since it is larger than the sum of its proper divisors (5995495504).

7993993996 is a wasteful number, since it uses less digits than its factorization.

7993993996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998498503 (or 1998498501 counting only the distinct ones).

The product of its digits is 200884698, while the sum is 73.

The square root of 7993993996 is about 89409.1382130484. The cubic root of 7993993996 is about 1999.4993743641.

Subtracting from 7993993996 its reverse (6993993997), we obtain a palindrome (999999999).

The spelling of 7993993996 in words is "seven billion, nine hundred ninety-three million, nine hundred ninety-three thousand, nine hundred ninety-six".