99985199 has 4 divisors (see below), whose sum is σ = 103210560. Its totient is φ = 96759840.

The previous prime is 99985159. The next prime is 99985217. The reversal of 99985199 is 99158999.

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 99985199 - 2²⁰ = 98936623 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 (99985159) 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, 1612634 + ... + 1612695.

It is an arithmetic number, because the mean of its divisors is an integer number (25802640).

Almost surely, 2^99985199 is an apocalyptic number.

99985199 is a deficient number, since it is larger than the sum of its proper divisors (3225361).

99985199 is a wasteful number, since it uses less digits than its factorization.

99985199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225360.

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

The square root of 99985199 is about 9999.2599226143. The cubic root of 99985199 is about 464.1359821793.

The spelling of 99985199 in words is "ninety-nine million, nine hundred eighty-five thousand, one hundred ninety-nine".