40685105 has 4 divisors (see below), whose sum is σ = 48822132. Its totient is φ = 32548080.

The previous prime is 40685083. The next prime is 40685129. The reversal of 40685105 is 50158604.

It is a happy number.

40685105 is digitally balanced in base 2, 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 can be written as a sum of positive squares in 2 ways, for example, as 11826721 + 28858384 = 3439^2 + 5372^2 .

It is not a de Polignac number, because 40685105 - 2⁸ = 40684849 is a prime.

It is a super-2 number, since 2×40685105² = 3310555537722050, which contains 22 as substring.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 4068506 + ... + 4068515.

It is an arithmetic number, because the mean of its divisors is an integer number (12205533).

Almost surely, 2^40685105 is an apocalyptic number.

It is an amenable number.

40685105 is a deficient number, since it is larger than the sum of its proper divisors (8137027).

40685105 is an equidigital number, since it uses as much as digits as its factorization.

40685105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8137026.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 40685105 is about 6378.4876734223. The cubic root of 40685105 is about 343.9366686414.

The spelling of 40685105 in words is "forty million, six hundred eighty-five thousand, one hundred five".