4221969 has 4 divisors (see below), whose sum is σ = 5629296. Its totient is φ = 2814644.

The previous prime is 4221953. The next prime is 4221977. The reversal of 4221969 is 9691224.

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.

It is a cyclic number.

It is not a de Polignac number, because 4221969 - 2⁴ = 4221953 is a prime.

It is a super-2 number, since 2×4221969² = 35650044473922, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4221989) 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 in 3 ways as a sum of consecutive naturals, for example, 703659 + ... + 703664.

It is an arithmetic number, because the mean of its divisors is an integer number (1407324).

Almost surely, 2^4221969 is an apocalyptic number.

It is an amenable number.

4221969 is a deficient number, since it is larger than the sum of its proper divisors (1407327).

4221969 is a wasteful number, since it uses less digits than its factorization.

4221969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407326.

The product of its digits is 7776, while the sum is 33.

The square root of 4221969 is about 2054.7430496293. The cubic root of 4221969 is about 161.6236883428.

The spelling of 4221969 in words is "four million, two hundred twenty-one thousand, nine hundred sixty-nine".