2444343021 has 8 divisors (see below), whose sum is σ = 3621248960. Its totient is φ = 1629561996.

The previous prime is 2444343007. The next prime is 2444343047. The reversal of 2444343021 is 1203434442.

It is a happy number.

It is not a de Polignac number, because 2444343021 - 2⁷ = 2444342893 is a prime.

It is a super-2 number, since 2×2444343021² = 11949625608622812882, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 90531223 = 2444343021 / (2 + 4 + 4 + 4 + 3 + 4 + 3 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444343001) 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, 45265585 + ... + 45265638.

It is an arithmetic number, because the mean of its divisors is an integer number (452656120).

Almost surely, 2^2444343021 is an apocalyptic number.

It is an amenable number.

2444343021 is a deficient number, since it is larger than the sum of its proper divisors (1176905939).

2444343021 is an equidigital number, since it uses as much as digits as its factorization.

2444343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90531232 (or 90531226 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 2444343021 is about 49440.2975415804. The cubic root of 2444343021 is about 1347.0613758672.

Adding to 2444343021 its reverse (1203434442), we get a palindrome (3647777463).

The spelling of 2444343021 in words is "two billion, four hundred forty-four million, three hundred forty-three thousand, twenty-one".