8979569 has 2 divisors, whose sum is σ = 8979570. Its totient is φ = 8979568.

The previous prime is 8979497. The next prime is 8979577. The reversal of 8979569 is 9659798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7491169 + 1488400 = 2737^2 + 1220^2 .

It is a cyclic number.

It is not a de Polignac number, because 8979569 - 2¹⁶ = 8914033 is a prime.

It is a super-2 number, since 2×8979569² = 161265318851522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8979569.

It is not a weakly prime, because it can be changed into another prime (8979599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4489784 + 4489785.

It is an arithmetic number, because the mean of its divisors is an integer number (4489785).

Almost surely, 2^8979569 is an apocalyptic number.

It is an amenable number.

8979569 is a deficient number, since it is larger than the sum of its proper divisors (1).

8979569 is an equidigital number, since it uses as much as digits as its factorization.

8979569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 53.

The square root of 8979569 is about 2996.5928986100. The cubic root of 8979569 is about 207.8508623358.

The spelling of 8979569 in words is "eight million, nine hundred seventy-nine thousand, five hundred sixty-nine".