422647727 has 4 divisors (see below), whose sum is σ = 447509376. Its totient is φ = 397786080.

The previous prime is 422647717. The next prime is 422647751. The reversal of 422647727 is 727746224.

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 422647727 - 2¹⁴ = 422631343 is a prime.

It is a super-2 number, since 2×422647727² = 357262202276533058, 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 (422647717) 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, 12430799 + ... + 12430832.

It is an arithmetic number, because the mean of its divisors is an integer number (111877344).

Almost surely, 2^422647727 is an apocalyptic number.

422647727 is a deficient number, since it is larger than the sum of its proper divisors (24861649).

422647727 is a wasteful number, since it uses less digits than its factorization.

422647727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24861648.

The product of its digits is 263424, while the sum is 41.

The square root of 422647727 is about 20558.3979677406. The cubic root of 422647727 is about 750.4576330022.

The spelling of 422647727 in words is "four hundred twenty-two million, six hundred forty-seven thousand, seven hundred twenty-seven".