420468479 has 2 divisors, whose sum is σ = 420468480. Its totient is φ = 420468478.

The previous prime is 420468431. The next prime is 420468487. The reversal of 420468479 is 974864024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420468479 - 2²⁴ = 403691263 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420468179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210234239 + 210234240.

It is an arithmetic number, because the mean of its divisors is an integer number (210234240).

Almost surely, 2^420468479 is an apocalyptic number.

420468479 is a deficient number, since it is larger than the sum of its proper divisors (1).

420468479 is an equidigital number, since it uses as much as digits as its factorization.

420468479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 420468479 is about 20505.3280637009. The cubic root of 420468479 is about 749.1655780717.

The spelling of 420468479 in words is "four hundred twenty million, four hundred sixty-eight thousand, four hundred seventy-nine".