2024440021 has 2 divisors, whose sum is σ = 2024440022. Its totient is φ = 2024440020.

The previous prime is 2024440009. The next prime is 2024440049. The reversal of 2024440021 is 1200444202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1980695025 + 43744996 = 44505^2 + 6614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2024440021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2024440051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012220010 + 1012220011.

It is an arithmetic number, because the mean of its divisors is an integer number (1012220011).

Almost surely, 2^2024440021 is an apocalyptic number.

It is an amenable number.

2024440021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2024440021 is an equidigital number, since it uses as much as digits as its factorization.

2024440021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2024440021 is about 44993.7775809056. Note that the first 3 decimals coincide. The cubic root of 2024440021 is about 1265.0323687864.

Adding to 2024440021 its reverse (1200444202), we get a palindrome (3224884223).

The spelling of 2024440021 in words is "two billion, twenty-four million, four hundred forty thousand, twenty-one".