422406407 has 4 divisors (see below), whose sum is σ = 422477280. Its totient is φ = 422335536.

The previous prime is 422406389. The next prime is 422406409. The reversal of 422406407 is 704604224.

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 422406407 - 2¹⁶ = 422340871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422406407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422406409) 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, 25583 + ... + 38720.

It is an arithmetic number, because the mean of its divisors is an integer number (105619320).

Almost surely, 2^422406407 is an apocalyptic number.

422406407 is a deficient number, since it is larger than the sum of its proper divisors (70873).

422406407 is an equidigital number, since it uses as much as digits as its factorization.

422406407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70872.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 422406407 is about 20552.5279953586. The cubic root of 422406407 is about 750.3147757217.

The spelling of 422406407 in words is "four hundred twenty-two million, four hundred six thousand, four hundred seven".