2144400443 has 4 divisors (see below), whose sum is σ = 2168494920. Its totient is φ = 2120305968.

The previous prime is 2144400403. The next prime is 2144400473. The reversal of 2144400443 is 3440044412.

It is a happy number.

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 2144400443 - 2⁸ = 2144400187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144400403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12047105 + ... + 12047282.

It is an arithmetic number, because the mean of its divisors is an integer number (542123730).

Almost surely, 2^2144400443 is an apocalyptic number.

2144400443 is a deficient number, since it is larger than the sum of its proper divisors (24094477).

2144400443 is an equidigital number, since it uses as much as digits as its factorization.

2144400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24094476.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 2144400443 is about 46307.6715350707. The cubic root of 2144400443 is about 1289.5414196365.

Adding to 2144400443 its reverse (3440044412), we get a palindrome (5584444855).

The spelling of 2144400443 in words is "two billion, one hundred forty-four million, four hundred thousand, four hundred forty-three".