9135905 has 4 divisors (see below), whose sum is σ = 10963092. Its totient is φ = 7308720.

The previous prime is 9135901. The next prime is 9135911. The reversal of 9135905 is 5095319.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6310144 + 2825761 = 2512^2 + 1681^2 .

It is not a de Polignac number, because 9135905 - 2² = 9135901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9135901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913586 + ... + 913595.

It is an arithmetic number, because the mean of its divisors is an integer number (2740773).

Almost surely, 2^9135905 is an apocalyptic number.

It is an amenable number.

9135905 is a deficient number, since it is larger than the sum of its proper divisors (1827187).

9135905 is a wasteful number, since it uses less digits than its factorization.

9135905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827186.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 9135905 is about 3022.5659628865. The cubic root of 9135905 is about 209.0501699572.

The spelling of 9135905 in words is "nine million, one hundred thirty-five thousand, nine hundred five".