504417409 has 2 divisors, whose sum is σ = 504417410. Its totient is φ = 504417408.

The previous prime is 504417401. The next prime is 504417427. The reversal of 504417409 is 904714405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498182400 + 6235009 = 22320^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 504417409 - 2³ = 504417401 is a prime.

It is not a weakly prime, because it can be changed into another prime (504417401) 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 as a sum of consecutive naturals, namely, 252208704 + 252208705.

It is an arithmetic number, because the mean of its divisors is an integer number (252208705).

Almost surely, 2^504417409 is an apocalyptic number.

It is an amenable number.

504417409 is a deficient number, since it is larger than the sum of its proper divisors (1).

504417409 is an equidigital number, since it uses as much as digits as its factorization.

504417409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 504417409 is about 22459.2388339409. The cubic root of 504417409 is about 796.0310759692.

The spelling of 504417409 in words is "five hundred four million, four hundred seventeen thousand, four hundred nine".