85857099 has 4 divisors (see below), whose sum is σ = 114476136. Its totient is φ = 57238064.

The previous prime is 85857059. The next prime is 85857113. The reversal of 85857099 is 99075858.

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 85857099 - 2⁸ = 85856843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85857019) 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 3 ways as a sum of consecutive naturals, for example, 14309514 + ... + 14309519.

It is an arithmetic number, because the mean of its divisors is an integer number (28619034).

Almost surely, 2^85857099 is an apocalyptic number.

85857099 is a deficient number, since it is larger than the sum of its proper divisors (28619037).

85857099 is a wasteful number, since it uses less digits than its factorization.

85857099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28619036.

The product of its (nonzero) digits is 907200, while the sum is 51.

The square root of 85857099 is about 9265.9105866612. The cubic root of 85857099 is about 441.1558778665.

The spelling of 85857099 in words is "eighty-five million, eight hundred fifty-seven thousand, ninety-nine".