904678990 has 32 divisors (see below), whose sum is σ = 1641682080. Its totient is φ = 358938624.

The previous prime is 904678969. The next prime is 904678991. The reversal of 904678990 is 99876409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904678991) 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 15 ways as a sum of consecutive naturals, for example, 800746 + ... + 801874.

It is an arithmetic number, because the mean of its divisors is an integer number (51302565).

Almost surely, 2^904678990 is an apocalyptic number.

904678990 is a deficient number, since it is larger than the sum of its proper divisors (737003090).

904678990 is a wasteful number, since it uses less digits than its factorization.

904678990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 904678990 is about 30077.8820730450. The cubic root of 904678990 is about 967.1596472127.

The spelling of 904678990 in words is "nine hundred four million, six hundred seventy-eight thousand, nine hundred ninety".