904221494 has 32 divisors (see below), whose sum is σ = 1565775360. Its totient is φ = 387587200.

The previous prime is 904221491. The next prime is 904221511. The reversal of 904221494 is 494122409.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (904221491) 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, 23342 + ... + 48510.

It is an arithmetic number, because the mean of its divisors is an integer number (48930480).

Almost surely, 2^904221494 is an apocalyptic number.

904221494 is a deficient number, since it is larger than the sum of its proper divisors (661553866).

904221494 is a wasteful number, since it uses less digits than its factorization.

904221494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25276.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 904221494 is about 30070.2759215808. The cubic root of 904221494 is about 966.9965889045.

The spelling of 904221494 in words is "nine hundred four million, two hundred twenty-one thousand, four hundred ninety-four".