422404217 has 4 divisors (see below), whose sum is σ = 423519120. Its totient is φ = 421289316.

The previous prime is 422404183. The next prime is 422404237. The reversal of 422404217 is 712404224.

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 not a de Polignac number, because 422404217 - 2¹⁶ = 422338681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422404237) 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, 556883 + ... + 557640.

It is an arithmetic number, because the mean of its divisors is an integer number (105879780).

Almost surely, 2^422404217 is an apocalyptic number.

It is an amenable number.

422404217 is a deficient number, since it is larger than the sum of its proper divisors (1114903).

422404217 is a wasteful number, since it uses less digits than its factorization.

422404217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114902.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 422404217 is about 20552.4747171721. The cubic root of 422404217 is about 750.3134790303.

The spelling of 422404217 in words is "four hundred twenty-two million, four hundred four thousand, two hundred seventeen".