9090902 has 4 divisors (see below), whose sum is σ = 13636356. Its totient is φ = 4545450.

The previous prime is 9090901. The next prime is 9090919. The reversal of 9090902 is 2090909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2090909 = 1093 ⋅1913.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272724 + ... + 2272727.

It is an arithmetic number, because the mean of its divisors is an integer number (3409089).

Almost surely, 2^9090902 is an apocalyptic number.

9090902 is a deficient number, since it is larger than the sum of its proper divisors (4545454).

9090902 is a wasteful number, since it uses less digits than its factorization.

9090902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545453.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 9090902 is about 3015.1122698832. The cubic root of 9090902 is about 208.7063479786.

The spelling of 9090902 in words is "nine million, ninety thousand, nine hundred two".