2238591 has 4 divisors (see below), whose sum is σ = 2984792. Its totient is φ = 1492392.

The previous prime is 2238589. The next prime is 2238619. The reversal of 2238591 is 1958322.

It is a happy number.

2238591 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 not a de Polignac number, because 2238591 - 2¹ = 2238589 is a prime.

It is a super-2 number, since 2×2238591² = 10022579330562, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238571) 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, 373096 + ... + 373101.

It is an arithmetic number, because the mean of its divisors is an integer number (746198).

2^2238591 is an apocalyptic number.

2238591 is a deficient number, since it is larger than the sum of its proper divisors (746201).

2238591 is an equidigital number, since it uses as much as digits as its factorization.

2238591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746200.

The product of its digits is 4320, while the sum is 30.

The square root of 2238591 is about 1496.1921668021. The cubic root of 2238591 is about 130.8152125317.

The spelling of 2238591 in words is "two million, two hundred thirty-eight thousand, five hundred ninety-one".