4220969 has 2 divisors, whose sum is σ = 4220970. Its totient is φ = 4220968.

The previous prime is 4220963. The next prime is 4220971. The reversal of 4220969 is 9690224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3374569 + 846400 = 1837^2 + 920^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4220969 is a prime.

It is a super-2 number, since 2×4220969² = 35633158597922, which contains 22 as substring.

Together with 4220971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4220963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110484 + 2110485.

It is an arithmetic number, because the mean of its divisors is an integer number (2110485).

Almost surely, 2^4220969 is an apocalyptic number.

It is an amenable number.

4220969 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220969 is an equidigital number, since it uses as much as digits as its factorization.

4220969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 4220969 is about 2054.4996957897. The cubic root of 4220969 is about 161.6109268050.

The spelling of 4220969 in words is "four million, two hundred twenty thousand, nine hundred sixty-nine".