904521313 has 2 divisors, whose sum is σ = 904521314. Its totient is φ = 904521312.

The previous prime is 904521287. The next prime is 904521347. The reversal of 904521313 is 313125409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888457249 + 16064064 = 29807^2 + 4008^2 .

It is a cyclic number.

It is not a de Polignac number, because 904521313 - 2¹³ = 904513121 is a prime.

It is not a weakly prime, because it can be changed into another prime (904521913) 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 as a sum of consecutive naturals, namely, 452260656 + 452260657.

It is an arithmetic number, because the mean of its divisors is an integer number (452260657).

Almost surely, 2^904521313 is an apocalyptic number.

It is an amenable number.

904521313 is a deficient number, since it is larger than the sum of its proper divisors (1).

904521313 is an equidigital number, since it uses as much as digits as its factorization.

904521313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 904521313 is about 30075.2608134992. The cubic root of 904521313 is about 967.1034550186.

The spelling of 904521313 in words is "nine hundred four million, five hundred twenty-one thousand, three hundred thirteen".