422439943 has 2 divisors, whose sum is σ = 422439944. Its totient is φ = 422439942.

The previous prime is 422439931. The next prime is 422439961. The reversal of 422439943 is 349934224.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422439943 - 2¹⁷ = 422308871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 422439896 and 422439905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422439923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211219971 + 211219972.

It is an arithmetic number, because the mean of its divisors is an integer number (211219972).

Almost surely, 2^422439943 is an apocalyptic number.

422439943 is a deficient number, since it is larger than the sum of its proper divisors (1).

422439943 is an equidigital number, since it uses as much as digits as its factorization.

422439943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 40.

The square root of 422439943 is about 20553.3438398719. The cubic root of 422439943 is about 750.3346317103.

The spelling of 422439943 in words is "four hundred twenty-two million, four hundred thirty-nine thousand, nine hundred forty-three".