8044409 has 2 divisors, whose sum is σ = 8044410. Its totient is φ = 8044408.

The previous prime is 8044373. The next prime is 8044423. The reversal of 8044409 is 9044408.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5626384 + 2418025 = 2372^2 + 1555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8044409 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8044109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4022204 + 4022205.

It is an arithmetic number, because the mean of its divisors is an integer number (4022205).

Almost surely, 2^8044409 is an apocalyptic number.

It is an amenable number.

8044409 is a deficient number, since it is larger than the sum of its proper divisors (1).

8044409 is an equidigital number, since it uses as much as digits as its factorization.

8044409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 8044409 is about 2836.2667363984. The cubic root of 8044409 is about 200.3693923265.

Subtracting 8044409 from its reverse (9044408), we obtain a palindrome (999999).

The spelling of 8044409 in words is "eight million, forty-four thousand, four hundred nine".