904289 has 2 divisors, whose sum is σ = 904290. Its totient is φ = 904288.

The previous prime is 904283. The next prime is 904297. The reversal of 904289 is 982409.

904289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819025 + 85264 = 905^2 + 292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-904289 is a prime.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (904283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452144 + 452145.

It is an arithmetic number, because the mean of its divisors is an integer number (452145).

2⁹⁰⁴²⁸⁹ is an apocalyptic number.

It is an amenable number.

904289 is a deficient number, since it is larger than the sum of its proper divisors (1).

904289 is an equidigital number, since it uses as much as digits as its factorization.

904289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 904289 is about 950.9411127930. The cubic root of 904289 is about 96.7020652495.

The spelling of 904289 in words is "nine hundred four thousand, two hundred eighty-nine".