8861599 has 4 divisors (see below), whose sum is σ = 8867880. Its totient is φ = 8855320.

The previous prime is 8861597. The next prime is 8861609. The reversal of 8861599 is 9951688.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8861599 - 2¹ = 8861597 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 (8861597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72 + ... + 4210.

It is an arithmetic number, because the mean of its divisors is an integer number (2216970).

Almost surely, 2^8861599 is an apocalyptic number.

8861599 is a deficient number, since it is larger than the sum of its proper divisors (6281).

8861599 is a wasteful number, since it uses less digits than its factorization.

8861599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6280.

The product of its digits is 155520, while the sum is 46.

The square root of 8861599 is about 2976.8437983878. The cubic root of 8861599 is about 206.9366263404.

It can be divided in two parts, 886 and 1599, that added together give a triangular number (2485 = T₇₀).

The spelling of 8861599 in words is "eight million, eight hundred sixty-one thousand, five hundred ninety-nine".