4437021 has 4 divisors (see below), whose sum is σ = 5916032. Its totient is φ = 2958012.

The previous prime is 4437011. The next prime is 4437053. The reversal of 4437021 is 1207344.

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 4437021 - 2⁵ = 4436989 is a prime.

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 (4437011) 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, 739501 + ... + 739506.

It is an arithmetic number, because the mean of its divisors is an integer number (1479008).

Almost surely, 2^4437021 is an apocalyptic number.

It is an amenable number.

4437021 is a deficient number, since it is larger than the sum of its proper divisors (1479011).

4437021 is a wasteful number, since it uses less digits than its factorization.

4437021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479010.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 4437021 is about 2106.4237465429. The cubic root of 4437021 is about 164.3225483347.

The spelling of 4437021 in words is "four million, four hundred thirty-seven thousand, twenty-one".