1401044443 has 4 divisors (see below), whose sum is σ = 1483458840. Its totient is φ = 1318630048.

The previous prime is 1401044413. The next prime is 1401044459. The reversal of 1401044443 is 3444401041.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401044443 is a prime.

It is a super-2 number, since 2×1401044443² = 3925851062522360498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401044413) by changing a digit.

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, 41207173 + ... + 41207206.

It is an arithmetic number, because the mean of its divisors is an integer number (370864710).

Almost surely, 2^1401044443 is an apocalyptic number.

1401044443 is a deficient number, since it is larger than the sum of its proper divisors (82414397).

1401044443 is an equidigital number, since it uses as much as digits as its factorization.

1401044443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82414396.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1401044443 is about 37430.5282222947. The cubic root of 1401044443 is about 1118.9670650336.

Adding to 1401044443 its reverse (3444401041), we get a palindrome (4845445484).

The spelling of 1401044443 in words is "one billion, four hundred one million, forty-four thousand, four hundred forty-three".