420444419 has 2 divisors, whose sum is σ = 420444420. Its totient is φ = 420444418.

The previous prime is 420444403. The next prime is 420444433. The reversal of 420444419 is 914444024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420444419 - 2⁴ = 420444403 is a prime.

It is a super-2 number, since 2×420444419² = 353547018936495122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420444499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210222209 + 210222210.

It is an arithmetic number, because the mean of its divisors is an integer number (210222210).

Almost surely, 2^420444419 is an apocalyptic number.

420444419 is a deficient number, since it is larger than the sum of its proper divisors (1).

420444419 is an equidigital number, since it uses as much as digits as its factorization.

420444419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 420444419 is about 20504.7413785202. The cubic root of 420444419 is about 749.1512882430.

The spelling of 420444419 in words is "four hundred twenty million, four hundred forty-four thousand, four hundred nineteen".