2229187 has 4 divisors (see below), whose sum is σ = 2260656. Its totient is φ = 2197720.

The previous prime is 2229169. The next prime is 2229239. The reversal of 2229187 is 7819222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2229187 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2229107) 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, 15628 + ... + 15769.

It is an arithmetic number, because the mean of its divisors is an integer number (565164).

2^2229187 is an apocalyptic number.

2229187 is a deficient number, since it is larger than the sum of its proper divisors (31469).

2229187 is an equidigital number, since it uses as much as digits as its factorization.

2229187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31468.

The product of its digits is 4032, while the sum is 31.

The square root of 2229187 is about 1493.0462149579. The cubic root of 2229187 is about 130.6317767750.

It can be divided in two parts, 222 and 9187, that added together give a square (9409 = 97²).

The spelling of 2229187 in words is "two million, two hundred twenty-nine thousand, one hundred eighty-seven".