43400010440 has 64 divisors (see below), whose sum is σ = 100401880320. Its totient is φ = 16873920000.

The previous prime is 43400010431. The next prime is 43400010473. The reversal of 43400010440 is 4401000434.

43400010440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395615 + ... + 493265.

It is an arithmetic number, because the mean of its divisors is an integer number (1568779380).

Almost surely, 2^43400010440 is an apocalyptic number.

43400010440 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 43400010440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50200940160).

43400010440 is an abundant number, since it is smaller than the sum of its proper divisors (57001869880).

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

43400010440 is a wasteful number, since it uses less digits than its factorization.

43400010440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97974 (or 97970 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 43400010440 its reverse (4401000434), we get a palindrome (47801010874).

The spelling of 43400010440 in words is "forty-three billion, four hundred million, ten thousand, four hundred forty".