9090923 has 4 divisors (see below), whose sum is σ = 9097080. Its totient is φ = 9084768.

The previous prime is 9090919. The next prime is 9090947. The reversal of 9090923 is 3290909.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9090923 - 2² = 9090919 is a prime.

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

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 9090923.

It is not an unprimeable number, because it can be changed into a prime (9090953) 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, 611 + ... + 4307.

It is an arithmetic number, because the mean of its divisors is an integer number (2274270).

Almost surely, 2^9090923 is an apocalyptic number.

9090923 is a deficient number, since it is larger than the sum of its proper divisors (6157).

9090923 is a wasteful number, since it uses less digits than its factorization.

9090923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156.

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

The square root of 9090923 is about 3015.1157523385. The cubic root of 9090923 is about 208.7065086825.

The spelling of 9090923 in words is "nine million, ninety thousand, nine hundred twenty-three".