43023440404 has 108 divisors (see below), whose sum is σ = 93252940956. Its totient is φ = 17314031616.

The previous prime is 43023440401. The next prime is 43023440413. The reversal of 43023440404 is 40404432034.

It can be written as a sum of positive squares in 6 ways, for example, as 2550048004 + 40473392400 = 50498^2 + 201180^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43023440401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 45144792 + ... + 45145744.

It is an arithmetic number, because the mean of its divisors is an integer number (863453157).

Almost surely, 2^43023440404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43023440404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46626470478).

43023440404 is an abundant number, since it is smaller than the sum of its proper divisors (50229500552).

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

43023440404 is a wasteful number, since it uses less digits than its factorization.

43023440404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 43023440404 its reverse (40404432034), we get a palindrome (83427872438).

The spelling of 43023440404 in words is "forty-three billion, twenty-three million, four hundred forty thousand, four hundred four".