7998338997 has 24 divisors (see below), whose sum is σ = 13038049440. Its totient is φ = 4680322080.

The previous prime is 7998338983. The next prime is 7998339001.

7998338997 is a `hidden beast` number, since 79 + 98 + 3 + 389 + 97 = 666.

7998338997 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7998338997 - 2⁴ = 7998338981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7998338927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1390083 + ... + 1395824.

It is an arithmetic number, because the mean of its divisors is an integer number (543252060).

Almost surely, 2^7998338997 is an apocalyptic number.

It is an amenable number.

7998338997 is a deficient number, since it is larger than the sum of its proper divisors (5039710443).

7998338997 is a wasteful number, since it uses less digits than its factorization.

7998338997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785953 (or 2785950 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The square root of 7998338997 is about 89433.4333289291. The cubic root of 7998338997 is about 1999.8615735026.

The spelling of 7998338997 in words is "seven billion, nine hundred ninety-eight million, three hundred thirty-eight thousand, nine hundred ninety-seven".