9090903 has 16 divisors (see below), whose sum is σ = 12895200. Its totient is φ = 5677056.

The previous prime is 9090901. The next prime is 9090919. The reversal of 9090903 is 3090909.

9090903 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9090903 - 2¹ = 9090901 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090901) 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, 20023 + ... + 20471.

It is an arithmetic number, because the mean of its divisors is an integer number (805950).

Almost surely, 2^9090903 is an apocalyptic number.

9090903 is a deficient number, since it is larger than the sum of its proper divisors (3804297).

9090903 is a wasteful number, since it uses less digits than its factorization.

9090903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866.

The product of its (nonzero) digits is 2187, while the sum is 30.

The square root of 9090903 is about 3015.1124357145. The cubic root of 9090903 is about 208.7063556312.

Subtracting from 9090903 its product of nonzero digits (2187), we obtain a triangular number (9088716 = T₄₂₆₃).

The spelling of 9090903 in words is "nine million, ninety thousand, nine hundred three".