401411111 has 4 divisors (see below), whose sum is σ = 418863792. Its totient is φ = 383958432.

The previous prime is 401411107. The next prime is 401411167. The reversal of 401411111 is 111114104.

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

It is a cyclic number.

It is not a de Polignac number, because 401411111 - 2² = 401411107 is a prime.

It is a super-2 number, since 2×401411111² = 322261760068508642, which contains 22 as substring.

It is a Duffinian number.

401411111 is a modest number, since divided by 11111 gives 4014 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401411611) 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, 8726306 + ... + 8726351.

It is an arithmetic number, because the mean of its divisors is an integer number (104715948).

Almost surely, 2^401411111 is an apocalyptic number.

401411111 is a deficient number, since it is larger than the sum of its proper divisors (17452681).

401411111 is a wasteful number, since it uses less digits than its factorization.

401411111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17452680.

The product of its (nonzero) digits is 16, while the sum is 14.

The square root of 401411111 is about 20035.2467167240. The cubic root of 401411111 is about 737.6717124253.

Adding to 401411111 its reverse (111114104), we get a palindrome (512525215).

The spelling of 401411111 in words is "four hundred one million, four hundred eleven thousand, one hundred eleven".