1304399989369 has 2 divisors, whose sum is σ = 1304399989370. Its totient is φ = 1304399989368.

The previous prime is 1304399989357. The next prime is 1304399989433. The reversal of 1304399989369 is 9639899934031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 833227572969 + 471172416400 = 912813^2 + 686420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304399989369 - 2²³ = 1304391600761 is a prime.

It is a super-2 number, since 2×1304399989369² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1304399989169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652199994684 + 652199994685.

It is an arithmetic number, because the mean of its divisors is an integer number (652199994685).

Almost surely, 2^{1304399989369} is an apocalyptic number.

It is an amenable number.

1304399989369 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304399989369 is an equidigital number, since it uses as much as digits as its factorization.

1304399989369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306110016, while the sum is 73.

The spelling of 1304399989369 in words is "one trillion, three hundred four billion, three hundred ninety-nine million, nine hundred eighty-nine thousand, three hundred sixty-nine".