904076321 has 2 divisors, whose sum is σ = 904076322. Its totient is φ = 904076320.

The previous prime is 904076309. The next prime is 904076323. The reversal of 904076321 is 123670409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 734139025 + 169937296 = 27095^2 + 13036^2 .

It is a cyclic number.

It is not a de Polignac number, because 904076321 - 2²⁶ = 836967457 is a prime.

Together with 904076323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (904076323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452038160 + 452038161.

It is an arithmetic number, because the mean of its divisors is an integer number (452038161).

Almost surely, 2^904076321 is an apocalyptic number.

It is an amenable number.

904076321 is a deficient number, since it is larger than the sum of its proper divisors (1).

904076321 is an equidigital number, since it uses as much as digits as its factorization.

904076321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 904076321 is about 30067.8619293092. The cubic root of 904076321 is about 966.9448356153.

The spelling of 904076321 in words is "nine hundred four million, seventy-six thousand, three hundred twenty-one".