401144111 has 2 divisors, whose sum is σ = 401144112. Its totient is φ = 401144110.

The previous prime is 401144101. The next prime is 401144129. The reversal of 401144111 is 111441104.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401144111 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401144111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401144101) 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 as a sum of consecutive naturals, namely, 200572055 + 200572056.

It is an arithmetic number, because the mean of its divisors is an integer number (200572056).

Almost surely, 2^401144111 is an apocalyptic number.

401144111 is a deficient number, since it is larger than the sum of its proper divisors (1).

401144111 is an equidigital number, since it uses as much as digits as its factorization.

401144111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 401144111 is about 20028.5823512300. The cubic root of 401144111 is about 737.5081211784.

Adding to 401144111 its reverse (111441104), we get a palindrome (512585215).

The spelling of 401144111 in words is "four hundred one million, one hundred forty-four thousand, one hundred eleven".