9130905 has 72 divisors (see below), whose sum is σ = 19046664. Its totient is φ = 4032000.

The previous prime is 9130903. The next prime is 9130937. The reversal of 9130905 is 5090319.

9130905 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 974169 + 8156736 = 987^2 + 2856^2 .

It is not a de Polignac number, because 9130905 - 2¹ = 9130903 is a prime.

It is a super-2 number, since 2×9130905² = 166746852238050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9130903) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 90355 + ... + 90455.

It is an arithmetic number, because the mean of its divisors is an integer number (264537).

Almost surely, 2^9130905 is an apocalyptic number.

It is an amenable number.

9130905 is an abundant number, since it is smaller than the sum of its proper divisors (9915759).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9130905 is a wasteful number, since it uses less digits than its factorization.

9130905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 9130905 is about 3021.7387378792. The cubic root of 9130905 is about 209.0120258947.

The spelling of 9130905 in words is "nine million, one hundred thirty thousand, nine hundred five".