401384111 has 2 divisors, whose sum is σ = 401384112. Its totient is φ = 401384110.

The previous prime is 401384057. The next prime is 401384147. The reversal of 401384111 is 111483104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401384111 - 2¹⁴ = 401367727 is a prime.

It is a super-2 number, since 2×401384111² = 322218409126520642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401384411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200692055 + 200692056.

It is an arithmetic number, because the mean of its divisors is an integer number (200692056).

Almost surely, 2^401384111 is an apocalyptic number.

401384111 is a deficient number, since it is larger than the sum of its proper divisors (1).

401384111 is an equidigital number, since it uses as much as digits as its factorization.

401384111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 401384111 is about 20034.5728928770. The cubic root of 401384111 is about 737.6551727878.

The spelling of 401384111 in words is "four hundred one million, three hundred eighty-four thousand, one hundred eleven".