5440442431 has 4 divisors (see below), whose sum is σ = 5566964392. Its totient is φ = 5313920472.

The previous prime is 5440442401. The next prime is 5440442437. The reversal of 5440442431 is 1342440445.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5440442431 - 2²¹ = 5438345279 is a prime.

It is a super-2 number, since 2×5440442431² = 59196827690050379522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5440442393 and 5440442402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5440442437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63260916 + ... + 63261001.

It is an arithmetic number, because the mean of its divisors is an integer number (1391741098).

Almost surely, 2^5440442431 is an apocalyptic number.

5440442431 is a deficient number, since it is larger than the sum of its proper divisors (126521961).

5440442431 is a wasteful number, since it uses less digits than its factorization.

5440442431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126521960.

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 5440442431 is about 73759.3548710941. The cubic root of 5440442431 is about 1758.7795463391.

Adding to 5440442431 its reverse (1342440445), we get a palindrome (6782882876).

The spelling of 5440442431 in words is "five billion, four hundred forty million, four hundred forty-two thousand, four hundred thirty-one".