40304400440 has 96 divisors (see below), whose sum is σ = 93437744400. Its totient is φ = 15646417920.

The previous prime is 40304400413. The next prime is 40304400443. The reversal of 40304400440 is 4400440304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40304400443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31267316 + ... + 31268604.

Almost surely, 2^40304400440 is an apocalyptic number.

40304400440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40304400440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46718872200).

40304400440 is an abundant number, since it is smaller than the sum of its proper divisors (53133343960).

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

40304400440 is a wasteful number, since it uses less digits than its factorization.

40304400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945 (or 1904 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 40304400440 its reverse (4400440304), we get a palindrome (44704840744).

The spelling of 40304400440 in words is "forty billion, three hundred four million, four hundred thousand, four hundred forty".