9040905 has 12 divisors (see below), whose sum is σ = 15670980. Its totient is φ = 4821792.

The previous prime is 9040897. The next prime is 9040907. The reversal of 9040905 is 5090409.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 6906384 = 1461^2 + 2628^2 .

It is not a de Polignac number, because 9040905 - 2³ = 9040897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9040907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100410 + ... + 100499.

It is an arithmetic number, because the mean of its divisors is an integer number (1305915).

Almost surely, 2^9040905 is an apocalyptic number.

It is an amenable number.

9040905 is a deficient number, since it is larger than the sum of its proper divisors (6630075).

9040905 is a wasteful number, since it uses less digits than its factorization.

9040905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200920 (or 200917 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 9040905 is about 3006.8097711694. The cubic root of 9040905 is about 208.3230387802.

The spelling of 9040905 in words is "nine million, forty thousand, nine hundred five".