2226391 has 4 divisors (see below), whose sum is σ = 2235312. Its totient is φ = 2217472.

The previous prime is 2226383. The next prime is 2226403. The reversal of 2226391 is 1936222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1936222 = 2 ⋅968111.

It is a cyclic number.

It is not a de Polignac number, because 2226391 - 2³ = 2226383 is a prime.

It is an Ulam 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 (2226311) 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, 4075 + ... + 4588.

It is an arithmetic number, because the mean of its divisors is an integer number (558828).

2^2226391 is an apocalyptic number.

2226391 is a deficient number, since it is larger than the sum of its proper divisors (8921).

2226391 is an equidigital number, since it uses as much as digits as its factorization.

2226391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8920.

The product of its digits is 1296, while the sum is 25.

The square root of 2226391 is about 1492.1095804263. The cubic root of 2226391 is about 130.5771381317.

The spelling of 2226391 in words is "two million, two hundred twenty-six thousand, three hundred ninety-one".