85863199 has 4 divisors (see below), whose sum is σ = 88183864. Its totient is φ = 83542536.

The previous prime is 85863181. The next prime is 85863227. The reversal of 85863199 is 99136858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99136858 = 2 ⋅49568429.

It is a cyclic number.

It is not a de Polignac number, because 85863199 - 2⁹ = 85862687 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 (85863499) 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, 1160277 + ... + 1160350.

It is an arithmetic number, because the mean of its divisors is an integer number (22045966).

Almost surely, 2^85863199 is an apocalyptic number.

85863199 is a deficient number, since it is larger than the sum of its proper divisors (2320665).

85863199 is a wasteful number, since it uses less digits than its factorization.

85863199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320664.

The product of its digits is 466560, while the sum is 49.

The square root of 85863199 is about 9266.2397443623. The cubic root of 85863199 is about 441.1663254092.

The spelling of 85863199 in words is "eighty-five million, eight hundred sixty-three thousand, one hundred ninety-nine".