422397 has 6 divisors (see below), whose sum is σ = 610142. Its totient is φ = 281592.

The previous prime is 422393. The next prime is 422407. The reversal of 422397 is 793224.

It can be written as a sum of positive squares in only one way, i.e., 251001 + 171396 = 501^2 + 414^2 .

It is not a de Polignac number, because 422397 - 2² = 422393 is a prime.

It is an Ulam number.

It is a Duffinian number.

422397 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 422397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23458 + ... + 23475.

2⁴²²³⁹⁷ is an apocalyptic number.

It is an amenable number.

422397 is a deficient number, since it is larger than the sum of its proper divisors (187745).

422397 is a wasteful number, since it uses less digits than its factorization.

422397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46939 (or 46936 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 422397 is about 649.9207644013. The cubic root of 422397 is about 75.0309205838.

The spelling of 422397 in words is "four hundred twenty-two thousand, three hundred ninety-seven".