904901 has 2 divisors, whose sum is σ = 904902. Its totient is φ = 904900.

The previous prime is 904879. The next prime is 904903. The reversal of 904901 is 109409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 2401 = 950^2 + 49^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-904901 is a prime.

Together with 904903, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₇₁₆₂₇ and since 904901 and 71627 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (904903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452450 + 452451.

It is an arithmetic number, because the mean of its divisors is an integer number (452451).

2⁹⁰⁴⁹⁰¹ is an apocalyptic number.

It is an amenable number.

904901 is a deficient number, since it is larger than the sum of its proper divisors (1).

904901 is an equidigital number, since it uses as much as digits as its factorization.

904901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 904901 is about 951.2628448541. The cubic root of 904901 is about 96.7238755034.

The spelling of 904901 in words is "nine hundred four thousand, nine hundred one".