40666972 has 6 divisors (see below), whose sum is σ = 71167208. Its totient is φ = 20333484.

The previous prime is 40666939. The next prime is 40666981. The reversal of 40666972 is 27966604.

40666972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40666972² = 3307605223297568, which contains 22 as substring.

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, 5083368 + ... + 5083375.

Almost surely, 2^40666972 is an apocalyptic number.

It is an amenable number.

40666972 is a deficient number, since it is larger than the sum of its proper divisors (30500236).

40666972 is a wasteful number, since it uses less digits than its factorization.

40666972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10166747 (or 10166745 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 40666972 is about 6377.0660965682. The cubic root of 40666972 is about 343.8855645139.

The spelling of 40666972 in words is "forty million, six hundred sixty-six thousand, nine hundred seventy-two".