4400021043 has 24 divisors (see below), whose sum is σ = 7080892416. Its totient is φ = 2609938800.

The previous prime is 4400021033. The next prime is 4400021077. The reversal of 4400021043 is 3401200044.

It is not a de Polignac number, because 4400021043 - 2⁵ = 4400021011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4400021033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468163 + ... + 477468.

It is an arithmetic number, because the mean of its divisors is an integer number (295037184).

Almost surely, 2^4400021043 is an apocalyptic number.

4400021043 is a deficient number, since it is larger than the sum of its proper divisors (2680871373).

4400021043 is a wasteful number, since it uses less digits than its factorization.

4400021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945695 (or 945692 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4400021043 is about 66332.6544244989. The cubic root of 4400021043 is about 1638.6451534664.

Adding to 4400021043 its reverse (3401200044), we get a palindrome (7801221087).

The spelling of 4400021043 in words is "four billion, four hundred million, twenty-one thousand, forty-three".