419990069 has 2 divisors, whose sum is σ = 419990070. Its totient is φ = 419990068.

The previous prime is 419990057. The next prime is 419990099. The reversal of 419990069 is 960099914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418202500 + 1787569 = 20450^2 + 1337^2 .

It is a cyclic number.

It is not a de Polignac number, because 419990069 - 2²⁰ = 418941493 is a prime.

It is a super-2 number, since 2×419990069² = 352783316117249522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (419990099) 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, 209995034 + 209995035.

It is an arithmetic number, because the mean of its divisors is an integer number (209995035).

Almost surely, 2^419990069 is an apocalyptic number.

It is an amenable number.

419990069 is a deficient number, since it is larger than the sum of its proper divisors (1).

419990069 is an equidigital number, since it uses as much as digits as its factorization.

419990069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 419990069 is about 20493.6592388963. The cubic root of 419990069 is about 748.8813361363.

The spelling of 419990069 in words is "four hundred nineteen million, nine hundred ninety thousand, sixty-nine".