40004111 has 16 divisors (see below), whose sum is σ = 48807936. Its totient is φ = 32006016.

The previous prime is 40004089. The next prime is 40004117. The reversal of 40004111 is 11140004.

It is not a de Polignac number, because 40004111 - 2⁶ = 40004047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40004092 and 40004101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40004117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13790 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (3050496).

Almost surely, 2^40004111 is an apocalyptic number.

40004111 is a deficient number, since it is larger than the sum of its proper divisors (8803825).

40004111 is a wasteful number, since it uses less digits than its factorization.

40004111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798.

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

The square root of 40004111 is about 6324.8803150732. The cubic root of 40004111 is about 342.0069051192.

Adding to 40004111 its reverse (11140004), we get a palindrome (51144115).

It can be divided in two parts, 40004 and 111, that multiplied together give a palindrome (4440444).

The spelling of 40004111 in words is "forty million, four thousand, one hundred eleven".