422864447 has 4 divisors (see below), whose sum is σ = 433178256. Its totient is φ = 412550640.

The previous prime is 422864441. The next prime is 422864461. The reversal of 422864447 is 744468224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422864447 - 2⁸ = 422864191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 10313767 = 422864447 / (4 + 2 + 2 + 8 + 6 + 4 + 4 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422864441) 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, 5156843 + ... + 5156924.

It is an arithmetic number, because the mean of its divisors is an integer number (108294564).

Almost surely, 2^422864447 is an apocalyptic number.

422864447 is a deficient number, since it is larger than the sum of its proper divisors (10313809).

422864447 is a wasteful number, since it uses less digits than its factorization.

422864447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10313808.

The product of its digits is 344064, while the sum is 41.

The square root of 422864447 is about 20563.6681309537. The cubic root of 422864447 is about 750.5858811681.

The spelling of 422864447 in words is "four hundred twenty-two million, eight hundred sixty-four thousand, four hundred forty-seven".