2199287 has 4 divisors (see below), whose sum is σ = 2208960. Its totient is φ = 2189616.

The previous prime is 2199277. The next prime is 2199299. The reversal of 2199287 is 7829912.

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 2199287 - 2¹² = 2195191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2199287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199217) 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, 4487 + ... + 4952.

It is an arithmetic number, because the mean of its divisors is an integer number (552240).

2^2199287 is an apocalyptic number.

2199287 is a deficient number, since it is larger than the sum of its proper divisors (9673).

2199287 is an equidigital number, since it uses as much as digits as its factorization.

2199287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9672.

The product of its digits is 18144, while the sum is 38.

The square root of 2199287 is about 1482.9993256910. Note that the first 3 decimals coincide. The cubic root of 2199287 is about 130.0450928382.

The spelling of 2199287 in words is "two million, one hundred ninety-nine thousand, two hundred eighty-seven".