2216399 has 2 divisors, whose sum is σ = 2216400. Its totient is φ = 2216398.

The previous prime is 2216387. The next prime is 2216413. The reversal of 2216399 is 9936122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2216399 - 2⁸ = 2216143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108199 + 1108200.

It is an arithmetic number, because the mean of its divisors is an integer number (1108200).

2^2216399 is an apocalyptic number.

2216399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216399 is an equidigital number, since it uses as much as digits as its factorization.

2216399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 2216399 is about 1488.7575356652. The cubic root of 2216399 is about 130.3815026079.

The spelling of 2216399 in words is "two million, two hundred sixteen thousand, three hundred ninety-nine".