41640909 has 8 divisors (see below), whose sum is σ = 55667712. Its totient is φ = 27687360.

The previous prime is 41640889. The next prime is 41640917. The reversal of 41640909 is 90904614.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 41640909 - 2⁵ = 41640877 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 41640909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41640959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16972 + ... + 19269.

It is an arithmetic number, because the mean of its divisors is an integer number (6958464).

Almost surely, 2^41640909 is an apocalyptic number.

It is an amenable number.

41640909 is a deficient number, since it is larger than the sum of its proper divisors (14026803).

41640909 is a wasteful number, since it uses less digits than its factorization.

41640909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36627.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 41640909 is about 6452.9767549558. The cubic root of 41640909 is about 346.6091849754.

The spelling of 41640909 in words is "forty-one million, six hundred forty thousand, nine hundred nine".