40167881 has 8 divisors (see below), whose sum is σ = 45534720. Its totient is φ = 35126352.

The previous prime is 40167857. The next prime is 40167893. The reversal of 40167881 is 18876104.

40167881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40167881 - 2⁶ = 40167817 is a prime.

It is a super-2 number, since 2×40167881² = 3226917328060322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40167811) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 81065 + ... + 81558.

It is an arithmetic number, because the mean of its divisors is an integer number (5691840).

Almost surely, 2^40167881 is an apocalyptic number.

It is an amenable number.

40167881 is a deficient number, since it is larger than the sum of its proper divisors (5366839).

40167881 is a wasteful number, since it uses less digits than its factorization.

40167881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162655.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 40167881 is about 6337.8135819855. The cubic root of 40167881 is about 342.4729756503.

The spelling of 40167881 in words is "forty million, one hundred sixty-seven thousand, eight hundred eighty-one".