9090913 has 8 divisors (see below), whose sum is σ = 9815400. Its totient is φ = 8370048.

The previous prime is 9090901. The next prime is 9090919. The reversal of 9090913 is 3190909.

9090913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1065024 + 8025889 = 1032^2 + 2833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9090913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9090919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6783 + ... + 8011.

It is an arithmetic number, because the mean of its divisors is an integer number (1226925).

Almost surely, 2^9090913 is an apocalyptic number.

It is an amenable number.

9090913 is a deficient number, since it is larger than the sum of its proper divisors (724487).

9090913 is a wasteful number, since it uses less digits than its factorization.

9090913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 9090913 is about 3015.1140940270. The cubic root of 9090913 is about 208.7064321569.

The spelling of 9090913 in words is "nine million, ninety thousand, nine hundred thirteen".