4221937 has 4 divisors (see below), whose sum is σ = 4230000. Its totient is φ = 4213876.

The previous prime is 4221923. The next prime is 4221941. The reversal of 4221937 is 7391224.

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 a de Polignac number, because none of the positive numbers 2^k-4221937 is a prime.

It is a Duffinian 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3187 + ... + 4312.

It is an arithmetic number, because the mean of its divisors is an integer number (1057500).

Almost surely, 2^4221937 is an apocalyptic number.

It is an amenable number.

4221937 is a deficient number, since it is larger than the sum of its proper divisors (8063).

4221937 is an equidigital number, since it uses as much as digits as its factorization.

4221937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8062.

The product of its digits is 3024, while the sum is 28.

The square root of 4221937 is about 2054.7352627528. The cubic root of 4221937 is about 161.6232800048.

The spelling of 4221937 in words is "four million, two hundred twenty-one thousand, nine hundred thirty-seven".