8879581 has 2 divisors, whose sum is σ = 8879582. Its totient is φ = 8879580.

The previous prime is 8879551. The next prime is 8879623. The reversal of 8879581 is 1859788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6584356 + 2295225 = 2566^2 + 1515^2 .

It is a cyclic number.

It is not a de Polignac number, because 8879581 - 2⁹ = 8879069 is a prime.

It is a super-2 number, since 2×8879581² = 157693917471122, which contains 22 as substring.

It is a Chen prime.

8879581 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8879551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4439790 + 4439791.

It is an arithmetic number, because the mean of its divisors is an integer number (4439791).

Almost surely, 2^8879581 is an apocalyptic number.

It is an amenable number.

8879581 is a deficient number, since it is larger than the sum of its proper divisors (1).

8879581 is an equidigital number, since it uses as much as digits as its factorization.

8879581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 46.

The square root of 8879581 is about 2979.8625807242. The cubic root of 8879581 is about 207.0765040407.

The spelling of 8879581 in words is "eight million, eight hundred seventy-nine thousand, five hundred eighty-one".