1304089 has 2 divisors, whose sum is σ = 1304090. Its totient is φ = 1304088.

The previous prime is 1304081. The next prime is 1304111. The reversal of 1304089 is 9804031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 4489 = 1140^2 + 67^2 .

It is an emirp because it is prime and its reverse (9804031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1304089 - 2³ = 1304081 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1304081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652044 + 652045.

It is an arithmetic number, because the mean of its divisors is an integer number (652045).

2^1304089 is an apocalyptic number.

It is an amenable number.

1304089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1304089 is an equidigital number, since it uses as much as digits as its factorization.

1304089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1304089 is about 1141.9671624000. The cubic root of 1304089 is about 109.2535968877.

The spelling of 1304089 in words is "one million, three hundred four thousand, eighty-nine".