41806109 has 4 divisors (see below), whose sum is σ = 41826204. Its totient is φ = 41786016.

The previous prime is 41806091. The next prime is 41806123. The reversal of 41806109 is 90160814.

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 22534009 + 19272100 = 4747^2 + 4390^2 .

It is a cyclic number.

It is not a de Polignac number, because 41806109 - 2⁸ = 41805853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41806169) 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, 6512 + ... + 11225.

It is an arithmetic number, because the mean of its divisors is an integer number (10456551).

Almost surely, 2^41806109 is an apocalyptic number.

It is an amenable number.

41806109 is a deficient number, since it is larger than the sum of its proper divisors (20095).

41806109 is a wasteful number, since it uses less digits than its factorization.

41806109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20094.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 41806109 is about 6465.7643786330. The cubic root of 41806109 is about 347.0669422128.

The spelling of 41806109 in words is "forty-one million, eight hundred six thousand, one hundred nine".