40004113 has 4 divisors (see below), whose sum is σ = 40069360. Its totient is φ = 39938868.

The previous prime is 40004089. The next prime is 40004117. The reversal of 40004113 is 31140004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40004113 - 2²¹ = 37906961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40004093 and 40004102.

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 3 ways as a sum of consecutive naturals, for example, 31695 + ... + 32932.

It is an arithmetic number, because the mean of its divisors is an integer number (10017340).

Almost surely, 2^40004113 is an apocalyptic number.

It is an amenable number.

40004113 is a deficient number, since it is larger than the sum of its proper divisors (65247).

40004113 is an equidigital number, since it uses as much as digits as its factorization.

40004113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65246.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40004113 is about 6324.8804731789. The cubic root of 40004113 is about 342.0069108187.

Adding to 40004113 its reverse (31140004), we get a palindrome (71144117).

The spelling of 40004113 in words is "forty million, four thousand, one hundred thirteen".