904994 has 4 divisors (see below), whose sum is σ = 1357494. Its totient is φ = 452496.

The previous prime is 904987. The next prime is 904997. The reversal of 904994 is 499409.

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

It can be written as a sum of positive squares in only one way, i.e., 714025 + 190969 = 845^2 + 437^2 .

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (904997) 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 as a sum of consecutive naturals, namely, 226247 + ... + 226250.

2⁹⁰⁴⁹⁹⁴ is an apocalyptic number.

904994 is a deficient number, since it is larger than the sum of its proper divisors (452500).

904994 is a wasteful number, since it uses less digits than its factorization.

904994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452499.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 904994 is about 951.3117259868. The cubic root of 904994 is about 96.7271889459.

The spelling of 904994 in words is "nine hundred four thousand, nine hundred ninety-four".