8618399 has 4 divisors (see below), whose sum is σ = 8993136. Its totient is φ = 8243664.

The previous prime is 8618387. The next prime is 8618413. The reversal of 8618399 is 9938168.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8618399 - 2²⁰ = 7569823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8618329) 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 in 3 ways as a sum of consecutive naturals, for example, 187334 + ... + 187379.

It is an arithmetic number, because the mean of its divisors is an integer number (2248284).

Almost surely, 2^8618399 is an apocalyptic number.

8618399 is a deficient number, since it is larger than the sum of its proper divisors (374737).

8618399 is a wasteful number, since it uses less digits than its factorization.

8618399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374736.

The product of its digits is 93312, while the sum is 44.

The square root of 8618399 is about 2935.7109871375. The cubic root of 8618399 is about 205.0259653805.

The spelling of 8618399 in words is "eight million, six hundred eighteen thousand, three hundred ninety-nine".