85199999 has 8 divisors (see below), whose sum is σ = 89256000. Its totient is φ = 81218592.

The previous prime is 85199993. The next prime is 85200013. The reversal of 85199999 is 99999158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85199999 is a prime.

It is a Duffinian number.

85199999 is a modest number, since divided by 9999 gives 8519 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85199993) 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 7 ways as a sum of consecutive naturals, for example, 16304 + ... + 20885.

It is an arithmetic number, because the mean of its divisors is an integer number (11157000).

Almost surely, 2^85199999 is an apocalyptic number.

85199999 is a deficient number, since it is larger than the sum of its proper divisors (4056001).

85199999 is a wasteful number, since it uses less digits than its factorization.

85199999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37297.

The product of its digits is 2361960, while the sum is 59.

The square root of 85199999 is about 9230.3845532025. The cubic root of 85199999 is about 440.0275447632.

The spelling of 85199999 in words is "eighty-five million, one hundred ninety-nine thousand, nine hundred ninety-nine".