4434210021 has 4 divisors (see below), whose sum is σ = 5912280032. Its totient is φ = 2956140012.

The previous prime is 4434210007. The next prime is 4434210031. The reversal of 4434210021 is 1200124344.

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 4434210021 - 2⁹ = 4434209509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4434210021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4434210031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739035001 + ... + 739035006.

It is an arithmetic number, because the mean of its divisors is an integer number (1478070008).

Almost surely, 2^4434210021 is an apocalyptic number.

It is an amenable number.

4434210021 is a deficient number, since it is larger than the sum of its proper divisors (1478070011).

4434210021 is a wasteful number, since it uses less digits than its factorization.

4434210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478070010.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4434210021 is about 66589.8642512507. The cubic root of 4434210021 is about 1642.8784000141.

Adding to 4434210021 its reverse (1200124344), we get a palindrome (5634334365).

The spelling of 4434210021 in words is "four billion, four hundred thirty-four million, two hundred ten thousand, twenty-one".