4000400111 has 4 divisors (see below), whose sum is σ = 4006526952. Its totient is φ = 3994273272.

The previous prime is 4000400093. The next prime is 4000400113. The reversal of 4000400111 is 1110040004.

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 4000400111 - 2¹⁴ = 4000383727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4000400092 and 4000400101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000400113) 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 in 3 ways as a sum of consecutive naturals, for example, 3062441 + ... + 3063746.

It is an arithmetic number, because the mean of its divisors is an integer number (1001631738).

Almost surely, 2^4000400111 is an apocalyptic number.

4000400111 is a deficient number, since it is larger than the sum of its proper divisors (6126841).

4000400111 is an equidigital number, since it uses as much as digits as its factorization.

4000400111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126840.

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

The square root of 4000400111 is about 63248.7162794629. The cubic root of 4000400111 is about 1587.4539782554.

Adding to 4000400111 its reverse (1110040004), we get a palindrome (5110440115).

The spelling of 4000400111 in words is "four billion, four hundred thousand, one hundred eleven".