40440000440 has 64 divisors (see below), whose sum is σ = 104029263360. Its totient is φ = 13859717760.

The previous prime is 40440000439. The next prime is 40440000449. The reversal of 40440000440 is 4400004404.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440000449) 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, 724325 + ... + 778155.

It is an arithmetic number, because the mean of its divisors is an integer number (1625457240).

Almost surely, 2^40440000440 is an apocalyptic number.

40440000440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40440000440 is an abundant number, since it is smaller than the sum of its proper divisors (63589262920).

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

40440000440 is a wasteful number, since it uses less digits than its factorization.

40440000440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56532 (or 56528 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40440000440 its reverse (4400004404), we get a palindrome (44840004844).

The spelling of 40440000440 in words is "forty billion, four hundred forty million, four hundred forty", and thus it is an aban number.