422867191 has 8 divisors (see below), whose sum is σ = 434654640. Its totient is φ = 411098688.

The previous prime is 422867161. The next prime is 422867209. The reversal of 422867191 is 191768224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422867191 - 2¹⁹ = 422342903 is a prime.

It is a super-2 number, since 2×422867191² = 357633322448460962, 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 (422867161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48795 + ... + 56803.

It is an arithmetic number, because the mean of its divisors is an integer number (54331830).

Almost surely, 2^422867191 is an apocalyptic number.

422867191 is a deficient number, since it is larger than the sum of its proper divisors (11787449).

422867191 is a wasteful number, since it uses less digits than its factorization.

422867191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9473.

The product of its digits is 48384, while the sum is 40.

The square root of 422867191 is about 20563.7348504594. The cubic root of 422867191 is about 750.5875047012.

The spelling of 422867191 in words is "four hundred twenty-two million, eight hundred sixty-seven thousand, one hundred ninety-one".