504628909 has 2 divisors, whose sum is σ = 504628910.
Its totient is φ = 504628908.
The previous prime is 504628897. The next prime is 504628921. The reversal of 504628909 is 909826405.
It is a balanced prime because it is at equal distance from previous prime (504628897) and next prime (504628921).
It can be written as a sum of positive squares in only one way, i.e., 472932009 + 31696900 = 21747^2 + 5630^2
It is a cyclic number.
It is not a de Polignac number, because 504628909 - 25 = 504628877 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (504628939) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252314454 + 252314455.
It is an arithmetic number, because the mean of its divisors is an integer number (252314455).
Almost surely, 2504628909 is an apocalyptic number.
It is an amenable number.
504628909 is a deficient number, since it is larger than the sum of its proper divisors (1).
504628909 is an equidigital number, since it uses as much as digits as its factorization.
504628909 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 155520, while the sum is 43.
The square root of 504628909 is about 22463.9468704856.
The cubic root of 504628909 is about 796.1423178653.
The spelling of 504628909 in words is "five hundred four million, six hundred twenty-eight thousand, nine hundred nine".