40666471 has 4 divisors (see below), whose sum is σ = 40689000. Its totient is φ = 40643944.

The previous prime is 40666459. The next prime is 40666487. The reversal of 40666471 is 17466604.

It is a happy number.

40666471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40666471 - 2⁹ = 40665959 is a prime.

It is a super-3 number, since 3×40666471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666411) 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 3 ways as a sum of consecutive naturals, for example, 8296 + ... + 12253.

It is an arithmetic number, because the mean of its divisors is an integer number (10172250).

Almost surely, 2^40666471 is an apocalyptic number.

40666471 is a deficient number, since it is larger than the sum of its proper divisors (22529).

40666471 is a wasteful number, since it uses less digits than its factorization.

40666471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22528.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 40666471 is about 6377.0268150604. The cubic root of 40666471 is about 343.8841523329.

The spelling of 40666471 in words is "forty million, six hundred sixty-six thousand, four hundred seventy-one".