4440421231 has 2 divisors, whose sum is σ = 4440421232. Its totient is φ = 4440421230.

The previous prime is 4440421211. The next prime is 4440421259. The reversal of 4440421231 is 1321240444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4440421231 - 2⁷ = 4440421103 is a prime.

It is a super-2 number, since 2×4440421231² = 39434681417431110722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4440421196 and 4440421205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4440421211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220210615 + 2220210616.

It is an arithmetic number, because the mean of its divisors is an integer number (2220210616).

Almost surely, 2^4440421231 is an apocalyptic number.

4440421231 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440421231 is an equidigital number, since it uses as much as digits as its factorization.

4440421231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 4440421231 is about 66636.4857341682. The cubic root of 4440421231 is about 1643.6451282378.

Adding to 4440421231 its reverse (1321240444), we get a palindrome (5761661675).

The spelling of 4440421231 in words is "four billion, four hundred forty million, four hundred twenty-one thousand, two hundred thirty-one".