422894449 has 4 divisors (see below), whose sum is σ = 422942436. Its totient is φ = 422846464.

The previous prime is 422894393. The next prime is 422894453. The reversal of 422894449 is 944498224.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 203262049 + 219632400 = 14257^2 + 14820^2 .

It is a cyclic number.

It is not a de Polignac number, because 422894449 - 2⁷ = 422894321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422894399 and 422894408.

It is not an unprimeable number, because it can be changed into a prime (422894149) 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, 6544 + ... + 29809.

It is an arithmetic number, because the mean of its divisors is an integer number (105735609).

Almost surely, 2^422894449 is an apocalyptic number.

It is an amenable number.

422894449 is a deficient number, since it is larger than the sum of its proper divisors (47987).

422894449 is a wasteful number, since it uses less digits than its factorization.

422894449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47986.

The product of its digits is 663552, while the sum is 46.

The square root of 422894449 is about 20564.3976084883. The cubic root of 422894449 is about 750.6036319669.

The spelling of 422894449 in words is "four hundred twenty-two million, eight hundred ninety-four thousand, four hundred forty-nine".