422894789 has 4 divisors (see below), whose sum is σ = 422953440. Its totient is φ = 422836140.

The previous prime is 422894779. The next prime is 422894807. The reversal of 422894789 is 987498224.

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 a de Polignac number, because none of the positive numbers 2^k-422894789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422894789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422894779) 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, 16697 + ... + 33534.

It is an arithmetic number, because the mean of its divisors is an integer number (105738360).

Almost surely, 2^422894789 is an apocalyptic number.

It is an amenable number.

422894789 is a deficient number, since it is larger than the sum of its proper divisors (58651).

422894789 is an equidigital number, since it uses as much as digits as its factorization.

422894789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58650.

The product of its digits is 2322432, while the sum is 53.

The square root of 422894789 is about 20564.4058752010. The cubic root of 422894789 is about 750.6038331243.

The spelling of 422894789 in words is "four hundred twenty-two million, eight hundred ninety-four thousand, seven hundred eighty-nine".