2223491 has 4 divisors (see below), whose sum is σ = 2244000. Its totient is φ = 2202984.

The previous prime is 2223469. The next prime is 2223493. The reversal of 2223491 is 1943222.

2223491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2223491 - 2¹⁸ = 1961347 is a prime.

It is a d-powerful number, because it can be written as 2¹⁶ + 2²⁰ + 2²⁰ + 3¹⁰ + 4⁵ + 9³ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2223493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10091 + ... + 10308.

It is an arithmetic number, because the mean of its divisors is an integer number (561000).

2^2223491 is an apocalyptic number.

2223491 is a deficient number, since it is larger than the sum of its proper divisors (20509).

2223491 is a wasteful number, since it uses less digits than its factorization.

2223491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20508.

The product of its digits is 864, while the sum is 23.

The square root of 2223491 is about 1491.1374852776. The cubic root of 2223491 is about 130.5204187992.

The spelling of 2223491 in words is "two million, two hundred twenty-three thousand, four hundred ninety-one".