422187973 has 4 divisors (see below), whose sum is σ = 422294400. Its totient is φ = 422081548.

The previous prime is 422187967. The next prime is 422187991. The reversal of 422187973 is 379781224.

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 422187973 - 2²¹ = 420090821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422187943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47023 + ... + 55276.

It is an arithmetic number, because the mean of its divisors is an integer number (105573600).

Almost surely, 2^422187973 is an apocalyptic number.

It is an amenable number.

422187973 is a deficient number, since it is larger than the sum of its proper divisors (106427).

422187973 is a wasteful number, since it uses less digits than its factorization.

422187973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106426.

The product of its digits is 169344, while the sum is 43.

The square root of 422187973 is about 20547.2132660368. The cubic root of 422187973 is about 750.1854196371.

The spelling of 422187973 in words is "four hundred twenty-two million, one hundred eighty-seven thousand, nine hundred seventy-three".