404000111 has 2 divisors, whose sum is σ = 404000112. Its totient is φ = 404000110.

The previous prime is 404000063. The next prime is 404000123. The reversal of 404000111 is 111000404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404000111 - 2¹⁸ = 403737967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404000092 and 404000101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404000161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202000055 + 202000056.

It is an arithmetic number, because the mean of its divisors is an integer number (202000056).

Almost surely, 2^404000111 is an apocalyptic number.

404000111 is a deficient number, since it is larger than the sum of its proper divisors (1).

404000111 is an equidigital number, since it uses as much as digits as its factorization.

404000111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 404000111 is about 20099.7540034698. The cubic root of 404000111 is about 739.2542468753.

Adding to 404000111 its reverse (111000404), we get a palindrome (515000515).

The spelling of 404000111 in words is "four hundred four million, one hundred eleven", and thus it is an aban number.