40113405 has 12 divisors (see below), whose sum is σ = 69529980. Its totient is φ = 21393792.

The previous prime is 40113391. The next prime is 40113413. The reversal of 40113405 is 50431104.

It is a happy number.

40113405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5503716 + 34609689 = 2346^2 + 5883^2 .

It is not a de Polignac number, because 40113405 - 2⁵ = 40113373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445660 + ... + 445749.

It is an arithmetic number, because the mean of its divisors is an integer number (5794165).

Almost surely, 2^40113405 is an apocalyptic number.

40113405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40113405 is a deficient number, since it is larger than the sum of its proper divisors (29416575).

40113405 is a wasteful number, since it uses less digits than its factorization.

40113405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891420 (or 891417 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40113405 is about 6333.5144272355. The cubic root of 40113405 is about 342.3180840821.

Adding to 40113405 its reverse (50431104), we get a palindrome (90544509).

The spelling of 40113405 in words is "forty million, one hundred thirteen thousand, four hundred five".