1304000509 has 8 divisors (see below), whose sum is σ = 1530564608. Its totient is φ = 1087506000.

The previous prime is 1304000507. The next prime is 1304000519. The reversal of 1304000509 is 9050004031.

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

It is not a de Polignac number, because 1304000509 - 2¹ = 1304000507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1304000509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304000507) 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, 2517117 + ... + 2517634.

It is an arithmetic number, because the mean of its divisors is an integer number (191320576).

Almost surely, 2^1304000509 is an apocalyptic number.

It is an amenable number.

1304000509 is a deficient number, since it is larger than the sum of its proper divisors (226564099).

1304000509 is an equidigital number, since it uses as much as digits as its factorization.

1304000509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5034795.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1304000509 is about 36110.9472182606. The cubic root of 1304000509 is about 1092.5112564056.

The spelling of 1304000509 in words is "one billion, three hundred four million, five hundred nine", and thus it is an aban number.