8426979693 has 64 divisors (see below), whose sum is σ = 14360371200. Its totient is φ = 4830295680.

The previous prime is 8426979661. The next prime is 8426979697. The reversal of 8426979693 is 3969796248.

It is not a de Polignac number, because 8426979693 - 2⁵ = 8426979661 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8426979693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8426979697) 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 63 ways as a sum of consecutive naturals, for example, 5376996 + ... + 5378562.

It is an arithmetic number, because the mean of its divisors is an integer number (224380800).

Almost surely, 2^8426979693 is an apocalyptic number.

It is an amenable number.

8426979693 is a deficient number, since it is larger than the sum of its proper divisors (5933391507).

8426979693 is a wasteful number, since it uses less digits than its factorization.

8426979693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559 (or 2553 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The square root of 8426979693 is about 91798.5821949337. The cubic root of 8426979693 is about 2034.9667418254.

The spelling of 8426979693 in words is "eight billion, four hundred twenty-six million, nine hundred seventy-nine thousand, six hundred ninety-three".