10400440440 has 64 divisors (see below), whose sum is σ = 33601428000. Its totient is φ = 2560108032.

The previous prime is 10400440423. The next prime is 10400440447. The reversal of 10400440440 is 4404400401.

It is a super-2 number, since 2×10400440440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400440447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3331915 + ... + 3335034.

Almost surely, 2^10400440440 is an apocalyptic number.

10400440440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10400440440 is an abundant number, since it is smaller than the sum of its proper divisors (23200987560).

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

10400440440 is a wasteful number, since it uses less digits than its factorization.

10400440440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666976 (or 6666972 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 10400440440 its reverse (4404400401), we get a palindrome (14804840841).

The spelling of 10400440440 in words is "ten billion, four hundred million, four hundred forty thousand, four hundred forty".