904904369393 has 2 divisors, whose sum is σ = 904904369394. Its totient is φ = 904904369392.

The previous prime is 904904369389. The next prime is 904904369401. The reversal of 904904369393 is 393963409409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 691929503329 + 212974866064 = 831823^2 + 461492^2 .

It is a cyclic number.

It is not a de Polignac number, because 904904369393 - 2² = 904904369389 is a prime.

It is not a weakly prime, because it can be changed into another prime (904904369333) 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, 452452184696 + 452452184697.

It is an arithmetic number, because the mean of its divisors is an integer number (452452184697).

Almost surely, 2^904904369393 is an apocalyptic number.

It is an amenable number.

904904369393 is a deficient number, since it is larger than the sum of its proper divisors (1).

904904369393 is an equidigital number, since it uses as much as digits as its factorization.

904904369393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17006112, while the sum is 59.

The spelling of 904904369393 in words is "nine hundred four billion, nine hundred four million, three hundred sixty-nine thousand, three hundred ninety-three".