419820169 has 2 divisors, whose sum is σ = 419820170. Its totient is φ = 419820168.

The previous prime is 419820119. The next prime is 419820263. The reversal of 419820169 is 961028914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383964025 + 35856144 = 19595^2 + 5988^2 .

It is a cyclic number.

It is not a de Polignac number, because 419820169 - 2¹¹ = 419818121 is a prime.

It is a super-2 number, since 2×419820169² = 352497948598377122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (419820119) 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, 209910084 + 209910085.

It is an arithmetic number, because the mean of its divisors is an integer number (209910085).

Almost surely, 2^419820169 is an apocalyptic number.

It is an amenable number.

419820169 is a deficient number, since it is larger than the sum of its proper divisors (1).

419820169 is an equidigital number, since it uses as much as digits as its factorization.

419820169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 419820169 is about 20489.5136350280. The cubic root of 419820169 is about 748.7803400182.

The spelling of 419820169 in words is "four hundred nineteen million, eight hundred twenty thousand, one hundred sixty-nine".