4431104021 has 4 divisors (see below), whose sum is σ = 4431925344. Its totient is φ = 4430282700.

The previous prime is 4431103993. The next prime is 4431104047. The reversal of 4431104021 is 1204011344.

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 not a de Polignac number, because 4431104021 - 2¹⁰ = 4431102997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4431103984 and 4431104002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4431101021) 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, 402515 + ... + 413376.

It is an arithmetic number, because the mean of its divisors is an integer number (1107981336).

Almost surely, 2^4431104021 is an apocalyptic number.

It is an amenable number.

4431104021 is a deficient number, since it is larger than the sum of its proper divisors (821323).

4431104021 is an equidigital number, since it uses as much as digits as its factorization.

4431104021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821322.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4431104021 is about 66566.5382981570. The cubic root of 4431104021 is about 1642.4947185777.

Adding to 4431104021 its reverse (1204011344), we get a palindrome (5635115365).

The spelling of 4431104021 in words is "four billion, four hundred thirty-one million, one hundred four thousand, twenty-one".