401043443 has 4 divisors (see below), whose sum is σ = 401777160. Its totient is φ = 400309728.

The previous prime is 401043437. The next prime is 401043449. The reversal of 401043443 is 344340104.

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

It is an interprime number because it is at equal distance from previous prime (401043437) and next prime (401043449).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401043443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401043449) 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, 366038 + ... + 367131.

It is an arithmetic number, because the mean of its divisors is an integer number (100444290).

Almost surely, 2^401043443 is an apocalyptic number.

401043443 is a deficient number, since it is larger than the sum of its proper divisors (733717).

401043443 is an equidigital number, since it uses as much as digits as its factorization.

401043443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733716.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 401043443 is about 20026.0690850701. The cubic root of 401043443 is about 737.4464229201.

Adding to 401043443 its reverse (344340104), we get a palindrome (745383547).

The spelling of 401043443 in words is "four hundred one million, forty-three thousand, four hundred forty-three".