419744209 has 2 divisors, whose sum is σ = 419744210. Its totient is φ = 419744208.

The previous prime is 419744207. The next prime is 419744239. The reversal of 419744209 is 902447914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266603584 + 153140625 = 16328^2 + 12375^2 .

It is a cyclic number.

It is not a de Polignac number, because 419744209 - 2¹ = 419744207 is a prime.

Together with 419744207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (419744207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209872104 + 209872105.

It is an arithmetic number, because the mean of its divisors is an integer number (209872105).

Almost surely, 2^419744209 is an apocalyptic number.

It is an amenable number.

419744209 is a deficient number, since it is larger than the sum of its proper divisors (1).

419744209 is an equidigital number, since it uses as much as digits as its factorization.

419744209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 419744209 is about 20487.6599200592. The cubic root of 419744209 is about 748.7351772005.

The spelling of 419744209 in words is "four hundred nineteen million, seven hundred forty-four thousand, two hundred nine".