40881869 has 16 divisors (see below), whose sum is σ = 47989248. Its totient is φ = 34100352.

The previous prime is 40881857. The next prime is 40881877. The reversal of 40881869 is 96818804.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40881869 - 2⁴ = 40881853 is a prime.

It is a super-2 number, since 2×40881869² = 3342654425866322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40881829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102779 + ... + 103175.

It is an arithmetic number, because the mean of its divisors is an integer number (2999328).

Almost surely, 2^40881869 is an apocalyptic number.

It is an amenable number.

40881869 is a deficient number, since it is larger than the sum of its proper divisors (7107379).

40881869 is a wasteful number, since it uses less digits than its factorization.

40881869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 40881869 is about 6393.8931020154. The cubic root of 40881869 is about 344.4902336360.

The spelling of 40881869 in words is "forty million, eight hundred eighty-one thousand, eight hundred sixty-nine".