8397149979 has 4 divisors (see below), whose sum is σ = 11196199976. Its totient is φ = 5598099984.

The previous prime is 8397149941. The next prime is 8397150011. The reversal of 8397149979 is 9799417938.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8397149979 - 2⁷ = 8397149851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8397149179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399524994 + ... + 1399524999.

It is an arithmetic number, because the mean of its divisors is an integer number (2799049994).

Almost surely, 2^8397149979 is an apocalyptic number.

8397149979 is a deficient number, since it is larger than the sum of its proper divisors (2799049997).

8397149979 is a wasteful number, since it uses less digits than its factorization.

8397149979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2799049996.

The product of its digits is 30862944, while the sum is 66.

The square root of 8397149979 is about 91635.9644408242. The cubic root of 8397149979 is about 2032.5627867540.

The spelling of 8397149979 in words is "eight billion, three hundred ninety-seven million, one hundred forty-nine thousand, nine hundred seventy-nine".