8564291979 has 4 divisors (see below), whose sum is σ = 11419055976. Its totient is φ = 5709527984.

The previous prime is 8564291959. The next prime is 8564291993. The reversal of 8564291979 is 9791924658.

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

It is a cyclic number.

It is not a de Polignac number, because 8564291979 - 2¹³ = 8564283787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8564291959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427381994 + ... + 1427381999.

It is an arithmetic number, because the mean of its divisors is an integer number (2854763994).

Almost surely, 2^8564291979 is an apocalyptic number.

8564291979 is a deficient number, since it is larger than the sum of its proper divisors (2854763997).

8564291979 is a wasteful number, since it uses less digits than its factorization.

8564291979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854763996.

The product of its digits is 9797760, while the sum is 60.

The square root of 8564291979 is about 92543.4599472053. The cubic root of 8564291979 is about 2045.9600770115.

The spelling of 8564291979 in words is "eight billion, five hundred sixty-four million, two hundred ninety-one thousand, nine hundred seventy-nine".