868394499 has 16 divisors (see below), whose sum is σ = 1332153600. Its totient is φ = 492893280.

The previous prime is 868394431. The next prime is 868394521. The reversal of 868394499 is 994493868.

It is not a de Polignac number, because 868394499 - 2¹⁶ = 868328963 is a prime.

It is a super-2 number, since 2×868394499² = 1508218011786922002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (868394099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135637 + ... + 141894.

It is an arithmetic number, because the mean of its divisors is an integer number (83259600).

Almost surely, 2^868394499 is an apocalyptic number.

868394499 is a deficient number, since it is larger than the sum of its proper divisors (463759101).

868394499 is a wasteful number, since it uses less digits than its factorization.

868394499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277690.

The product of its digits is 13436928, while the sum is 60.

The square root of 868394499 is about 29468.5340490497. The cubic root of 868394499 is about 954.0526771892.

The spelling of 868394499 in words is "eight hundred sixty-eight million, three hundred ninety-four thousand, four hundred ninety-nine".