4000043680 has 24 divisors (see below), whose sum is σ = 9450103572. Its totient is φ = 1600017408.

The previous prime is 4000043659. The next prime is 4000043731. The reversal of 4000043680 is 863400004.

It can be written as a sum of positive squares in 2 ways, for example, as 3561224976 + 438818704 = 59676^2 + 20948^2 .

4000043680 is a modest number, since divided by 43680 gives 4000 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12499977 + ... + 12500296.

Almost surely, 2^4000043680 is an apocalyptic number.

4000043680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4000043680 is an abundant number, since it is smaller than the sum of its proper divisors (5450059892).

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

4000043680 is a wasteful number, since it uses less digits than its factorization.

4000043680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25000288 (or 25000280 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4000043680 is about 63245.8985231454. The cubic root of 4000043680 is about 1587.4068300870.

Adding to 4000043680 its reverse (863400004), we get a palindrome (4863443684).

The spelling of 4000043680 in words is "four billion, forty-three thousand, six hundred eighty".