40666966 has 4 divisors (see below), whose sum is σ = 61000452. Its totient is φ = 20333482.

The previous prime is 40666939. The next prime is 40666981. The reversal of 40666966 is 66966604.

40666966 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 congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10166740 + ... + 10166743.

It is an arithmetic number, because the mean of its divisors is an integer number (15250113).

Almost surely, 2^40666966 is an apocalyptic number.

40666966 is a deficient number, since it is larger than the sum of its proper divisors (20333486).

40666966 is a wasteful number, since it uses less digits than its factorization.

40666966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20333485.

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 40666966 is about 6377.0656261324. The cubic root of 40666966 is about 343.8855476017.

The spelling of 40666966 in words is "forty million, six hundred sixty-six thousand, nine hundred sixty-six".