4442032021 has 32 divisors (see below), whose sum is σ = 5601576960. Its totient is φ = 3434498496.

The previous prime is 4442032019. The next prime is 4442032039. The reversal of 4442032021 is 1202302444.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4442032021 - 2¹ = 4442032019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4442031983 and 4442032001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4442032321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 691195 + ... + 697591.

It is an arithmetic number, because the mean of its divisors is an integer number (175049280).

Almost surely, 2^4442032021 is an apocalyptic number.

It is an amenable number.

4442032021 is a deficient number, since it is larger than the sum of its proper divisors (1159544939).

4442032021 is a wasteful number, since it uses less digits than its factorization.

4442032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4442032021 is about 66648.5710349442. The cubic root of 4442032021 is about 1643.8438516563.

Adding to 4442032021 its reverse (1202302444), we get a palindrome (5644334465).

It can be divided in two parts, 444203 and 2021, that added together give a square (446224 = 668²).

The spelling of 4442032021 in words is "four billion, four hundred forty-two million, thirty-two thousand, twenty-one".