9081913 has 4 divisors (see below), whose sum is σ = 9088128. Its totient is φ = 9075700.

The previous prime is 9081889. The next prime is 9081931. The reversal of 9081913 is 3191809.

9081913 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3191809 = 41 ⋅77849.

It is a cyclic number.

It is not a de Polignac number, because 9081913 - 2⁵ = 9081881 is a prime.

It is a super-2 number, since 2×9081913² = 164962287479138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9081973) 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, 420 + ... + 4282.

It is an arithmetic number, because the mean of its divisors is an integer number (2272032).

Almost surely, 2^9081913 is an apocalyptic number.

It is an amenable number.

9081913 is a deficient number, since it is larger than the sum of its proper divisors (6215).

9081913 is a wasteful number, since it uses less digits than its factorization.

9081913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6214.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 9081913 is about 3013.6212436204. The cubic root of 9081913 is about 208.6375363233.

The spelling of 9081913 in words is "nine million, eighty-one thousand, nine hundred thirteen".