40666955 has 16 divisors (see below), whose sum is σ = 56298240. Its totient is φ = 27622752.

The previous prime is 40666939. The next prime is 40666981. The reversal of 40666955 is 55966604.

40666955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40666955 - 2⁴ = 40666939 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 1685 + ... + 9174.

It is an arithmetic number, because the mean of its divisors is an integer number (3518640).

Almost surely, 2^40666955 is an apocalyptic number.

40666955 is a deficient number, since it is larger than the sum of its proper divisors (15631285).

40666955 is a wasteful number, since it uses less digits than its factorization.

40666955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10978.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 40666955 is about 6377.0647636667. The cubic root of 40666955 is about 343.8855165958.

The spelling of 40666955 in words is "forty million, six hundred sixty-six thousand, nine hundred fifty-five".