1304382639 has 8 divisors (see below), whose sum is σ = 1987630720. Its totient is φ = 745361496.

The previous prime is 1304382631. The next prime is 1304382649. The reversal of 1304382639 is 9362834031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1304382639 - 2³ = 1304382631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1304382597 and 1304382606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304382631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31056709 + ... + 31056750.

It is an arithmetic number, because the mean of its divisors is an integer number (248453840).

Almost surely, 2^1304382639 is an apocalyptic number.

1304382639 is a deficient number, since it is larger than the sum of its proper divisors (683248081).

1304382639 is an equidigital number, since it uses as much as digits as its factorization.

1304382639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62113469.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 1304382639 is about 36116.2378854720. The cubic root of 1304382639 is about 1092.6179640717.

The spelling of 1304382639 in words is "one billion, three hundred four million, three hundred eighty-two thousand, six hundred thirty-nine".