504343409 has 2 divisors, whose sum is σ = 504343410. Its totient is φ = 504343408.

The previous prime is 504343393. The next prime is 504343423. The reversal of 504343409 is 904343405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478384384 + 25959025 = 21872^2 + 5095^2 .

It is a cyclic number.

It is not a de Polignac number, because 504343409 - 2⁴ = 504343393 is a prime.

It is not a weakly prime, because it can be changed into another prime (504342409) 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, 252171704 + 252171705.

It is an arithmetic number, because the mean of its divisors is an integer number (252171705).

Almost surely, 2^504343409 is an apocalyptic number.

It is an amenable number.

504343409 is a deficient number, since it is larger than the sum of its proper divisors (1).

504343409 is an equidigital number, since it uses as much as digits as its factorization.

504343409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 504343409 is about 22457.5913445766. The cubic root of 504343409 is about 795.9921471116.

The spelling of 504343409 in words is "five hundred four million, three hundred forty-three thousand, four hundred nine".