1304869 has 4 divisors (see below), whose sum is σ = 1381644. Its totient is φ = 1228096.

The previous prime is 1304867. The next prime is 1304887. The reversal of 1304869 is 9684031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9684031 = 7 ⋅1383433.

It can be written as a sum of positive squares in 2 ways, for example, as 1113025 + 191844 = 1055^2 + 438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304869 - 2¹ = 1304867 is a prime.

It is a super-2 number, since 2×1304869² = 3405366214322, which contains 22 as substring.

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 1304869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304867) 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 in 3 ways as a sum of consecutive naturals, for example, 38362 + ... + 38395.

It is an arithmetic number, because the mean of its divisors is an integer number (345411).

2^1304869 is an apocalyptic number.

It is an amenable number.

1304869 is a deficient number, since it is larger than the sum of its proper divisors (76775).

1304869 is an equidigital number, since it uses as much as digits as its factorization.

1304869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76774.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1304869 is about 1142.3086272982. The cubic root of 1304869 is about 109.2753747523.

The spelling of 1304869 in words is "one million, three hundred four thousand, eight hundred sixty-nine".