419859491 has 2 divisors, whose sum is σ = 419859492. Its totient is φ = 419859490.

The previous prime is 419859469. The next prime is 419859493. The reversal of 419859491 is 194958914.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-419859491 is a prime.

Together with 419859493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (419859493) 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, 209929745 + 209929746.

It is an arithmetic number, because the mean of its divisors is an integer number (209929746).

Almost surely, 2^419859491 is an apocalyptic number.

419859491 is a deficient number, since it is larger than the sum of its proper divisors (1).

419859491 is an equidigital number, since it uses as much as digits as its factorization.

419859491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 50.

The square root of 419859491 is about 20490.4731765765. The cubic root of 419859491 is about 748.8037171874.

The spelling of 419859491 in words is "four hundred nineteen million, eight hundred fifty-nine thousand, four hundred ninety-one".