419990399 has 2 divisors, whose sum is σ = 419990400. Its totient is φ = 419990398.

The previous prime is 419990393. The next prime is 419990401. The reversal of 419990399 is 993099914.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 419990399 - 2¹⁶ = 419924863 is a prime.

Together with 419990401, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 419990399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (419990393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209995199 + 209995200.

It is an arithmetic number, because the mean of its divisors is an integer number (209995200).

Almost surely, 2^419990399 is an apocalyptic number.

419990399 is a deficient number, since it is larger than the sum of its proper divisors (1).

419990399 is an equidigital number, since it uses as much as digits as its factorization.

419990399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 708588, while the sum is 53.

The square root of 419990399 is about 20493.6672901655. The cubic root of 419990399 is about 748.8815322765.

The spelling of 419990399 in words is "four hundred nineteen million, nine hundred ninety thousand, three hundred ninety-nine".