904563945 has 12 divisors (see below), whose sum is σ = 1567910916. Its totient is φ = 482434080.

The previous prime is 904563929. The next prime is 904563949. The reversal of 904563945 is 549365409.

904563945 is a `hidden beast` number, since 9 + 0 + 4 + 5 + 639 + 4 + 5 = 666.

904563945 is digitally balanced in base 6, 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 2 ways, for example, as 620607744 + 283956201 = 24912^2 + 16851^2 .

It is not a de Polignac number, because 904563945 - 2⁴ = 904563929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 20101421 = 904563945 / (9 + 0 + 4 + 5 + 6 + 3 + 9 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 904563945.

It is not an unprimeable number, because it can be changed into a prime (904563949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10050666 + ... + 10050755.

It is an arithmetic number, because the mean of its divisors is an integer number (130659243).

Almost surely, 2^904563945 is an apocalyptic number.

It is an amenable number.

904563945 is a deficient number, since it is larger than the sum of its proper divisors (663346971).

904563945 is a wasteful number, since it uses less digits than its factorization.

904563945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20101432 (or 20101429 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 904563945 is about 30075.9695604315. The cubic root of 904563945 is about 967.1186486561.

The spelling of 904563945 in words is "nine hundred four million, five hundred sixty-three thousand, nine hundred forty-five".