1324409 has 8 divisors (see below), whose sum is σ = 1399680. Its totient is φ = 1250656.

The previous prime is 1324403. The next prime is 1324429. The reversal of 1324409 is 9044231.

1324409 = 21² + 22² + ... + 158².

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1324409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1324403) 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 7 ways as a sum of consecutive naturals, for example, 1724 + ... + 2370.

It is an arithmetic number, because the mean of its divisors is an integer number (174960).

2^1324409 is an apocalyptic number.

It is an amenable number.

1324409 is a deficient number, since it is larger than the sum of its proper divisors (75271).

1324409 is an equidigital number, since it uses as much as digits as its factorization.

1324409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1324409 is about 1150.8297006942. The cubic root of 1324409 is about 109.8181292180.

The spelling of 1324409 in words is "one million, three hundred twenty-four thousand, four hundred nine".