85198899 has 8 divisors (see below), whose sum is σ = 114875280. Its totient is φ = 56160896.

The previous prime is 85198889. The next prime is 85198903. The reversal of 85198899 is 99889158.

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

It is a cyclic number.

It is not a de Polignac number, because 85198899 - 2¹¹ = 85196851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85198879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159282 + ... + 159815.

It is an arithmetic number, because the mean of its divisors is an integer number (14359410).

Almost surely, 2^85198899 is an apocalyptic number.

85198899 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

85198899 is a deficient number, since it is larger than the sum of its proper divisors (29676381).

85198899 is a wasteful number, since it uses less digits than its factorization.

85198899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319189.

The product of its digits is 1866240, while the sum is 57.

The square root of 85198899 is about 9230.3249671937. The cubic root of 85198899 is about 440.0256510528.

The spelling of 85198899 in words is "eighty-five million, one hundred ninety-eight thousand, eight hundred ninety-nine".