4423591 has 4 divisors (see below), whose sum is σ = 4428432. Its totient is φ = 4418752.

The previous prime is 4423583. The next prime is 4423603. The reversal of 4423591 is 1953244.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4423591 - 2³ = 4423583 is a prime.

It is an Ulam number.

It is a Duffinian number.

4423591 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4423511) 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, 586 + ... + 3031.

It is an arithmetic number, because the mean of its divisors is an integer number (1107108).

Almost surely, 2^4423591 is an apocalyptic number.

4423591 is a deficient number, since it is larger than the sum of its proper divisors (4841).

4423591 is a wasteful number, since it uses less digits than its factorization.

4423591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4840.

The product of its digits is 4320, while the sum is 28.

The square root of 4423591 is about 2103.2334630278. The cubic root of 4423591 is about 164.1565899776.

The spelling of 4423591 in words is "four million, four hundred twenty-three thousand, five hundred ninety-one".