2216393 has 4 divisors (see below), whose sum is σ = 2219520. Its totient is φ = 2213268.

The previous prime is 2216387. The next prime is 2216399. The reversal of 2216393 is 3936122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3936122 = 2 ⋅1968061.

It is an interprime number because it is at equal distance from previous prime (2216387) and next prime (2216399).

It is a cyclic number.

It is not a de Polignac number, because 2216393 - 2⁴ = 2216377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216399) 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, 68 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (554880).

2^2216393 is an apocalyptic number.

It is an amenable number.

2216393 is a deficient number, since it is larger than the sum of its proper divisors (3127).

2216393 is a wasteful number, since it uses less digits than its factorization.

2216393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126.

The product of its digits is 1944, while the sum is 26.

The square root of 2216393 is about 1488.7555205607. The cubic root of 2216393 is about 130.3813849561.

The spelling of 2216393 in words is "two million, two hundred sixteen thousand, three hundred ninety-three".