99198903 has 4 divisors (see below), whose sum is σ = 132265208. Its totient is φ = 66132600.

The previous prime is 99198899. The next prime is 99198919. The reversal of 99198903 is 30989199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30989199 = 3 ⋅10329733.

It is not a de Polignac number, because 99198903 - 2² = 99198899 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 (99198973) 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, 16533148 + ... + 16533153.

It is an arithmetic number, because the mean of its divisors is an integer number (33066302).

Almost surely, 2^99198903 is an apocalyptic number.

99198903 is a deficient number, since it is larger than the sum of its proper divisors (33066305).

99198903 is a wasteful number, since it uses less digits than its factorization.

99198903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33066304.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 99198903 is about 9959.8646075135. The cubic root of 99198903 is about 462.9161045117.

The spelling of 99198903 in words is "ninety-nine million, one hundred ninety-eight thousand, nine hundred three".