2209863 has 8 divisors (see below), whose sum is σ = 3074688. Its totient is φ = 1409144.

The previous prime is 2209853. The next prime is 2209891. The reversal of 2209863 is 3689022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2209863 - 2⁸ = 2209607 is a prime.

2209863 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2209863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2209843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15945 + ... + 16082.

It is an arithmetic number, because the mean of its divisors is an integer number (384336).

2^2209863 is an apocalyptic number.

2209863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2209863 is a deficient number, since it is larger than the sum of its proper divisors (864825).

2209863 is a wasteful number, since it uses less digits than its factorization.

2209863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32053.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2209863 is about 1486.5607959313. The cubic root of 2209863 is about 130.2532145542.

The spelling of 2209863 in words is "two million, two hundred nine thousand, eight hundred sixty-three".