40641305 has 16 divisors (see below), whose sum is σ = 51788160. Its totient is φ = 30511872.

The previous prime is 40641283. The next prime is 40641331. The reversal of 40641305 is 50314604.

It is a happy number.

It is not a de Polignac number, because 40641305 - 2²² = 36447001 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54626 + ... + 55364.

It is an arithmetic number, because the mean of its divisors is an integer number (3236760).

Almost surely, 2^40641305 is an apocalyptic number.

It is an amenable number.

40641305 is a deficient number, since it is larger than the sum of its proper divisors (11146855).

40641305 is a wasteful number, since it uses less digits than its factorization.

40641305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 40641305 is about 6375.0533331102. The cubic root of 40641305 is about 343.8132013819.

Adding to 40641305 its reverse (50314604), we get a palindrome (90955909).

The spelling of 40641305 in words is "forty million, six hundred forty-one thousand, three hundred five".