422590591 has 4 divisors (see below), whose sum is σ = 423742432. Its totient is φ = 421438752.

The previous prime is 422590577. The next prime is 422590631. The reversal of 422590591 is 195095224.

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 422590591 - 2⁵ = 422590559 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 422590591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422590501) 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, 575370 + ... + 576103.

It is an arithmetic number, because the mean of its divisors is an integer number (105935608).

Almost surely, 2^422590591 is an apocalyptic number.

422590591 is a deficient number, since it is larger than the sum of its proper divisors (1151841).

422590591 is a wasteful number, since it uses less digits than its factorization.

422590591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151840.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 422590591 is about 20557.0083183327. The cubic root of 422590591 is about 750.4238143893.

The spelling of 422590591 in words is "four hundred twenty-two million, five hundred ninety thousand, five hundred ninety-one".