4221994 has 16 divisors (see below), whose sum is σ = 7488000. Its totient is φ = 1746864.

The previous prime is 4221989. The next prime is 4222003. The reversal of 4221994 is 4991224.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4794 + ... + 5605.

It is an arithmetic number, because the mean of its divisors is an integer number (468000).

Almost surely, 2^4221994 is an apocalyptic number.

4221994 is a deficient number, since it is larger than the sum of its proper divisors (3266006).

4221994 is a wasteful number, since it uses less digits than its factorization.

4221994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10437.

The product of its digits is 5184, while the sum is 31.

The square root of 4221994 is about 2054.7491331060. The cubic root of 4221994 is about 161.6240073554.

The spelling of 4221994 in words is "four million, two hundred twenty-one thousand, nine hundred ninety-four".