99900203 has 16 divisors (see below), whose sum is σ = 109485600. Its totient is φ = 90602496.

The previous prime is 99900191. The next prime is 99900221. The reversal of 99900203 is 30200999.

It is a cyclic number.

It is not a de Polignac number, because 99900203 - 2⁶ = 99900139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99900203.

It is not an unprimeable number, because it can be changed into a prime (99900253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286073 + ... + 286421.

It is an arithmetic number, because the mean of its divisors is an integer number (6842850).

Almost surely, 2^99900203 is an apocalyptic number.

99900203 is a deficient number, since it is larger than the sum of its proper divisors (9585397).

99900203 is a wasteful number, since it uses less digits than its factorization.

99900203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 99900203 is about 9995.0089044483. The cubic root of 99900203 is about 464.0044264218.

The spelling of 99900203 in words is "ninety-nine million, nine hundred thousand, two hundred three".