5440405440 has 56 divisors (see below), whose sum is σ = 17273290320. Its totient is φ = 1450774528.

The previous prime is 5440405409. The next prime is 5440405447. The reversal of 5440405440 is 445040445.

It is a happy number.

It is a super-2 number, since 2×5440405440² = 59196022703163187200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5440405398 and 5440405407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5440405447) 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, 2832585 + ... + 2834504.

Almost surely, 2^5440405440 is an apocalyptic number.

It is an amenable number.

5440405440 is an abundant number, since it is smaller than the sum of its proper divisors (11832884880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5440405440 is a wasteful number, since it uses less digits than its factorization.

5440405440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5667109 (or 5667099 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 5440405440 is about 73759.1041160344. The cubic root of 5440405440 is about 1758.7755601951.

Adding to 5440405440 its reverse (445040445), we get a palindrome (5885445885).

The spelling of 5440405440 in words is "five billion, four hundred forty million, four hundred five thousand, four hundred forty".