904213840709 has 2 divisors, whose sum is σ = 904213840710. Its totient is φ = 904213840708.

The previous prime is 904213840687. The next prime is 904213840723. The reversal of 904213840709 is 907048312409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497699208484 + 406514632225 = 705478^2 + 637585^2 .

It is a cyclic number.

It is not a de Polignac number, because 904213840709 - 2³⁶ = 835494363973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (904213840609) 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, 452106920354 + 452106920355.

It is an arithmetic number, because the mean of its divisors is an integer number (452106920355).

Almost surely, 2^904213840709 is an apocalyptic number.

It is an amenable number.

904213840709 is a deficient number, since it is larger than the sum of its proper divisors (1).

904213840709 is an equidigital number, since it uses as much as digits as its factorization.

904213840709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 904213840709 in words is "nine hundred four billion, two hundred thirteen million, eight hundred forty thousand, seven hundred nine".