4403431021 has 8 divisors (see below), whose sum is σ = 4969389600. Its totient is φ = 3865080240.

The previous prime is 4403430947. The next prime is 4403431063. The reversal of 4403431021 is 1201343044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4403431021 - 2¹⁷ = 4403299949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4403430983 and 4403431001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4403431091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6901611 + ... + 6902248.

It is an arithmetic number, because the mean of its divisors is an integer number (621173700).

Almost surely, 2^4403431021 is an apocalyptic number.

It is an amenable number.

4403431021 is a deficient number, since it is larger than the sum of its proper divisors (565958579).

4403431021 is a wasteful number, since it uses less digits than its factorization.

4403431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13803899.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4403431021 is about 66358.3530612386. The cubic root of 4403431021 is about 1639.0683560682.

Adding to 4403431021 its reverse (1201343044), we get a palindrome (5604774065).

The spelling of 4403431021 in words is "four billion, four hundred three million, four hundred thirty-one thousand, twenty-one".