426221867 has 2 divisors, whose sum is σ = 426221868. Its totient is φ = 426221866.

The previous prime is 426221843. The next prime is 426221881. The reversal of 426221867 is 768122624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426221867 - 2¹⁶ = 426156331 is a prime.

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 426221867.

It is not a weakly prime, because it can be changed into another prime (426220867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213110933 + 213110934.

It is an arithmetic number, because the mean of its divisors is an integer number (213110934).

Almost surely, 2^426221867 is an apocalyptic number.

426221867 is a deficient number, since it is larger than the sum of its proper divisors (1).

426221867 is an equidigital number, since it uses as much as digits as its factorization.

426221867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 38.

The square root of 426221867 is about 20645.1414865580. The cubic root of 426221867 is about 752.5671243235.

The spelling of 426221867 in words is "four hundred twenty-six million, two hundred twenty-one thousand, eight hundred sixty-seven".