422447 has 4 divisors (see below), whose sum is σ = 424536. Its totient is φ = 420360.

The previous prime is 422431. The next prime is 422453. The reversal of 422447 is 744224.

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 422447 - 2⁴ = 422431 is a prime.

It is a super-2 number, since 2×422447² = 356922935618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (106134).

2⁴²²⁴⁴⁷ is an apocalyptic number.

422447 is a deficient number, since it is larger than the sum of its proper divisors (2089).

422447 is a wasteful number, since it uses less digits than its factorization.

422447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088.

The product of its digits is 1792, while the sum is 23.

The square root of 422447 is about 649.9592294906. The cubic root of 422447 is about 75.0338809884.

The spelling of 422447 in words is "four hundred twenty-two thousand, four hundred forty-seven", and thus it is an iban number.