8613959 has 2 divisors, whose sum is σ = 8613960. Its totient is φ = 8613958.

The previous prime is 8613953. The next prime is 8613961. The reversal of 8613959 is 9593168.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8613959 is a prime.

Together with 8613961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8613953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4306979 + 4306980.

It is an arithmetic number, because the mean of its divisors is an integer number (4306980).

Almost surely, 2^8613959 is an apocalyptic number.

8613959 is a deficient number, since it is larger than the sum of its proper divisors (1).

8613959 is an equidigital number, since it uses as much as digits as its factorization.

8613959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 8613959 is about 2934.9546844883. The cubic root of 8613959 is about 204.9907511195.

The spelling of 8613959 in words is "eight million, six hundred thirteen thousand, nine hundred fifty-nine".