1304579839 has 2 divisors, whose sum is σ = 1304579840. Its totient is φ = 1304579838.

The previous prime is 1304579831. The next prime is 1304579921. The reversal of 1304579839 is 9389754031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1304579839 - 2³ = 1304579831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1304579792 and 1304579801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1304579831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652289919 + 652289920.

It is an arithmetic number, because the mean of its divisors is an integer number (652289920).

Almost surely, 2^1304579839 is an apocalyptic number.

1304579839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304579839 is an equidigital number, since it uses as much as digits as its factorization.

1304579839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1304579839 is about 36118.9678562386. The cubic root of 1304579839 is about 1092.6730229169.

The spelling of 1304579839 in words is "one billion, three hundred four million, five hundred seventy-nine thousand, eight hundred thirty-nine".