4221972 has 36 divisors (see below), whose sum is σ = 11138400. Its totient is φ = 1345872.

The previous prime is 4221953. The next prime is 4221977. The reversal of 4221972 is 2791224.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221977) 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 11 ways as a sum of consecutive naturals, for example, 1722 + ... + 3377.

It is an arithmetic number, because the mean of its divisors is an integer number (309400).

Almost surely, 2^4221972 is an apocalyptic number.

It is an amenable number.

4221972 is an abundant number, since it is smaller than the sum of its proper divisors (6916428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4221972 is a wasteful number, since it uses less digits than its factorization.

4221972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5132 (or 5127 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 4221972 is about 2054.7437796475. The cubic root of 4221972 is about 161.6237266244.

The spelling of 4221972 in words is "four million, two hundred twenty-one thousand, nine hundred seventy-two".