401440401 has 8 divisors (see below), whose sum is σ = 594726560. Its totient is φ = 267626916.

The previous prime is 401440387. The next prime is 401440411. The reversal of 401440401 is 104044104.

It is not a de Polignac number, because 401440401 - 2¹¹ = 401438353 is a prime.

It is a super-2 number, since 2×401440401² = 322308791110081602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401440411) 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 7 ways as a sum of consecutive naturals, for example, 7434055 + ... + 7434108.

It is an arithmetic number, because the mean of its divisors is an integer number (74340820).

Almost surely, 2^401440401 is an apocalyptic number.

It is an amenable number.

401440401 is a deficient number, since it is larger than the sum of its proper divisors (193286159).

401440401 is a wasteful number, since it uses less digits than its factorization.

401440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14868172 (or 14868166 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 401440401 is about 20035.9776651902. The cubic root of 401440401 is about 737.6896540305.

Adding to 401440401 its reverse (104044104), we get a palindrome (505484505).

It can be divided in two parts, 40 and 1440401, that added together give a palindrome (1440441).

The spelling of 401440401 in words is "four hundred one million, four hundred forty thousand, four hundred one".