979008881 has 2 divisors, whose sum is σ = 979008882. Its totient is φ = 979008880.

The previous prime is 979008871. The next prime is 979008887. The reversal of 979008881 is 188800979.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 706230625 + 272778256 = 26575^2 + 16516^2 .

It is an emirp because it is prime and its reverse (188800979) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979008881 is a prime.

It is a super-2 number, since 2×979008881² = 1916916778153744322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (979008887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489504440 + 489504441.

It is an arithmetic number, because the mean of its divisors is an integer number (489504441).

Almost surely, 2^979008881 is an apocalyptic number.

It is an amenable number.

979008881 is a deficient number, since it is larger than the sum of its proper divisors (1).

979008881 is an equidigital number, since it uses as much as digits as its factorization.

979008881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 979008881 is about 31289.1176129977. The cubic root of 979008881 is about 992.9534227127.

The spelling of 979008881 in words is "nine hundred seventy-nine million, eight thousand, eight hundred eighty-one".