419993291 has 2 divisors, whose sum is σ = 419993292. Its totient is φ = 419993290.

The previous prime is 419993267. The next prime is 419993293. The reversal of 419993291 is 192399914.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-419993291 is a prime.

It is a Sophie Germain prime.

Together with 419993293, 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 (419993293) 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, 209996645 + 209996646.

It is an arithmetic number, because the mean of its divisors is an integer number (209996646).

Almost surely, 2^419993291 is an apocalyptic number.

419993291 is a deficient number, since it is larger than the sum of its proper divisors (1).

419993291 is an equidigital number, since it uses as much as digits as its factorization.

419993291 is an odious number, because the sum of its binary digits is odd.

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

The square root of 419993291 is about 20493.7378484258. The cubic root of 419993291 is about 748.8832511732.

The spelling of 419993291 in words is "four hundred nineteen million, nine hundred ninety-three thousand, two hundred ninety-one".