10440430021 has 8 divisors (see below), whose sum is σ = 11988471104. Its totient is φ = 8906526720.

The previous prime is 10440430001. The next prime is 10440430069. The reversal of 10440430021 is 12003404401.

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

It is not a de Polignac number, because 10440430021 - 2⁹ = 10440429509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10440430001) 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, 3532860 + ... + 3535813.

It is an arithmetic number, because the mean of its divisors is an integer number (1498558888).

Almost surely, 2^10440430021 is an apocalyptic number.

It is an amenable number.

10440430021 is a deficient number, since it is larger than the sum of its proper divisors (1548041083).

10440430021 is an equidigital number, since it uses as much as digits as its factorization.

10440430021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7068891.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10440430021 its reverse (12003404401), we get a palindrome (22443834422).

The spelling of 10440430021 in words is "ten billion, four hundred forty million, four hundred thirty thousand, twenty-one".