10400111 has 4 divisors (see below), whose sum is σ = 10419672. Its totient is φ = 10380552.

The previous prime is 10400077. The next prime is 10400123. The reversal of 10400111 is 11100401.

10400111 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 10400111 - 2²² = 6205807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400161) 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, 8960 + ... + 10053.

It is an arithmetic number, because the mean of its divisors is an integer number (2604918).

Almost surely, 2^10400111 is an apocalyptic number.

10400111 is a deficient number, since it is larger than the sum of its proper divisors (19561).

10400111 is an equidigital number, since it uses as much as digits as its factorization.

10400111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19560.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 10400111 is about 3224.9203090929. The cubic root of 10400111 is about 218.2793531775.

Adding to 10400111 its reverse (11100401), we get a palindrome (21500512).

The spelling of 10400111 in words is "ten million, four hundred thousand, one hundred eleven".