422869 has 2 divisors, whose sum is σ = 422870. Its totient is φ = 422868.

The previous prime is 422867. The next prime is 422879. The reversal of 422869 is 968224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 97969 = 570^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 422869 - 2¹ = 422867 is a prime.

It is a super-2 number, since 2×422869² = 357636382322, which contains 22 as substring.

Together with 422867, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 422869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211434 + 211435.

It is an arithmetic number, because the mean of its divisors is an integer number (211435).

2⁴²²⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

422869 is a deficient number, since it is larger than the sum of its proper divisors (1).

422869 is an equidigital number, since it uses as much as digits as its factorization.

422869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 422869 is about 650.2837842050. The cubic root of 422869 is about 75.0588575022.

The spelling of 422869 in words is "four hundred twenty-two thousand, eight hundred sixty-nine".