1304439 has 4 divisors (see below), whose sum is σ = 1739256. Its totient is φ = 869624.

The previous prime is 1304419. The next prime is 1304477. The reversal of 1304439 is 9344031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1304439 - 2⁸ = 1304183 is a prime.

It is a super-2 number, since 2×1304439² = 3403122209442, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217404 + ... + 217409.

It is an arithmetic number, because the mean of its divisors is an integer number (434814).

2^1304439 is an apocalyptic number.

1304439 is a deficient number, since it is larger than the sum of its proper divisors (434817).

1304439 is an equidigital number, since it uses as much as digits as its factorization.

1304439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434816.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1304439 is about 1142.1203964556. The cubic root of 1304439 is about 109.2633700802.

The spelling of 1304439 in words is "one million, three hundred four thousand, four hundred thirty-nine".