4040400443 has 4 divisors (see below), whose sum is σ = 4134363288. Its totient is φ = 3946437600.

The previous prime is 4040400389. The next prime is 4040400451. The reversal of 4040400443 is 3440040404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4040400443 - 2⁸ = 4040400187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040400493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46981358 + ... + 46981443.

It is an arithmetic number, because the mean of its divisors is an integer number (1033590822).

Almost surely, 2^4040400443 is an apocalyptic number.

4040400443 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

4040400443 is a deficient number, since it is larger than the sum of its proper divisors (93962845).

4040400443 is an equidigital number, since it uses as much as digits as its factorization.

4040400443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93962844.

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

The square root of 4040400443 is about 63564.1443189476. The cubic root of 4040400443 is about 1592.7274683598.

Adding to 4040400443 its reverse (3440040404), we get a palindrome (7480440847).

The spelling of 4040400443 in words is "four billion, forty million, four hundred thousand, four hundred forty-three".