4221669 has 4 divisors (see below), whose sum is σ = 5628896. Its totient is φ = 2814444.

The previous prime is 4221653. The next prime is 4221671. The reversal of 4221669 is 9661224.

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 not a de Polignac number, because 4221669 - 2⁴ = 4221653 is a prime.

It is a super-2 number, since 2×4221669² = 35644978291122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221619) 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, 703609 + ... + 703614.

It is an arithmetic number, because the mean of its divisors is an integer number (1407224).

Almost surely, 2^4221669 is an apocalyptic number.

It is an amenable number.

4221669 is a deficient number, since it is larger than the sum of its proper divisors (1407227).

4221669 is a wasteful number, since it uses less digits than its factorization.

4221669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407226.

The product of its digits is 5184, while the sum is 30.

The square root of 4221669 is about 2054.6700465038. The cubic root of 4221669 is about 161.6198600931.

The spelling of 4221669 in words is "four million, two hundred twenty-one thousand, six hundred sixty-nine".