8579491 has 2 divisors, whose sum is σ = 8579492. Its totient is φ = 8579490.

The previous prime is 8579443. The next prime is 8579503. The reversal of 8579491 is 1949758.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8579491 is a prime.

It is not a weakly prime, because it can be changed into another prime (8579411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4289745 + 4289746.

It is an arithmetic number, because the mean of its divisors is an integer number (4289746).

Almost surely, 2^8579491 is an apocalyptic number.

8579491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8579491 is an equidigital number, since it uses as much as digits as its factorization.

8579491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 43.

The square root of 8579491 is about 2929.0768170193. The cubic root of 8579491 is about 204.7169681288.

The spelling of 8579491 in words is "eight million, five hundred seventy-nine thousand, four hundred ninety-one".