422664019 has 4 divisors (see below), whose sum is σ = 423472696. Its totient is φ = 421855344.

The previous prime is 422664007. The next prime is 422664037. The reversal of 422664019 is 910466224.

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 422664019 - 2²⁵ = 389109587 is a prime.

It is a super-2 number, since 2×422664019² = 357289745914464722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422664049) 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, 403554 + ... + 404599.

It is an arithmetic number, because the mean of its divisors is an integer number (105868174).

Almost surely, 2^422664019 is an apocalyptic number.

422664019 is a deficient number, since it is larger than the sum of its proper divisors (808677).

422664019 is an equidigital number, since it uses as much as digits as its factorization.

422664019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808676.

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

The square root of 422664019 is about 20558.7942010226. The cubic root of 422664019 is about 750.4672756257.

The spelling of 422664019 in words is "four hundred twenty-two million, six hundred sixty-four thousand, nineteen".