7993993997 has 8 divisors (see below), whose sum is σ = 9233704512. Its totient is φ = 6839780800.

The previous prime is 7993993961. The next prime is 7993994009.

7993993997 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7993993997 - 2⁸ = 7993993741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7993993297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21374129 + ... + 21374502.

It is an arithmetic number, because the mean of its divisors is an integer number (1154213064).

Almost surely, 2^7993993997 is an apocalyptic number.

It is an amenable number.

7993993997 is a deficient number, since it is larger than the sum of its proper divisors (1239710515).

7993993997 is a wasteful number, since it uses less digits than its factorization.

7993993997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42748659.

The product of its digits is 234365481, while the sum is 74.

The square root of 7993993997 is about 89409.1382186407. The cubic root of 7993993997 is about 1999.4993744475.

The spelling of 7993993997 in words is "seven billion, nine hundred ninety-three million, nine hundred ninety-three thousand, nine hundred ninety-seven".