422321389 has 4 divisors (see below), whose sum is σ = 482653024. Its totient is φ = 361989756.

The previous prime is 422321387. The next prime is 422321407. The reversal of 422321389 is 983123224.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 422321389 - 2¹ = 422321387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422321381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30165807 + ... + 30165820.

It is an arithmetic number, because the mean of its divisors is an integer number (120663256).

Almost surely, 2^422321389 is an apocalyptic number.

It is an amenable number.

422321389 is a deficient number, since it is larger than the sum of its proper divisors (60331635).

422321389 is an equidigital number, since it uses as much as digits as its factorization.

422321389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60331634.

The product of its digits is 20736, while the sum is 34.

The square root of 422321389 is about 20550.4595812356. The cubic root of 422321389 is about 750.2644335704.

The spelling of 422321389 in words is "four hundred twenty-two million, three hundred twenty-one thousand, three hundred eighty-nine".