2216969 has 2 divisors, whose sum is σ = 2216970. Its totient is φ = 2216968.

The previous prime is 2216957. The next prime is 2216989. The reversal of 2216969 is 9696122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2190400 + 26569 = 1480^2 + 163^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216969 - 2¹⁶ = 2151433 is a prime.

It is a super-2 number, since 2×2216969² = 9829903093922, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2216909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108484 + 1108485.

It is an arithmetic number, because the mean of its divisors is an integer number (1108485).

2^2216969 is an apocalyptic number.

It is an amenable number.

2216969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216969 is an equidigital number, since it uses as much as digits as its factorization.

2216969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 2216969 is about 1488.9489581581. The cubic root of 2216969 is about 130.3926785569.

The spelling of 2216969 in words is "two million, two hundred sixteen thousand, nine hundred sixty-nine".