8979817427 has 4 divisors (see below), whose sum is σ = 10262648496. Its totient is φ = 7696986360.

The previous prime is 8979817403. The next prime is 8979817439. The reversal of 8979817427 is 7247189798.

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

It is not a de Polignac number, because 8979817427 - 2¹⁰ = 8979816403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8979817427.

It is not an unprimeable number, because it can be changed into a prime (8979817477) 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, 641415524 + ... + 641415537.

It is an arithmetic number, because the mean of its divisors is an integer number (2565662124).

Almost surely, 2^8979817427 is an apocalyptic number.

8979817427 is a deficient number, since it is larger than the sum of its proper divisors (1282831069).

8979817427 is a wasteful number, since it uses less digits than its factorization.

8979817427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282831068.

The product of its digits is 14224896, while the sum is 62.

The square root of 8979817427 is about 94761.8986038165. The cubic root of 8979817427 is about 2078.5277910518.

The spelling of 8979817427 in words is "eight billion, nine hundred seventy-nine million, eight hundred seventeen thousand, four hundred twenty-seven".