40666884 has 12 divisors (see below), whose sum is σ = 94889424. Its totient is φ = 13555624.

The previous prime is 40666877. The next prime is 40666889. The reversal of 40666884 is 48866604.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (40666889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694442 + ... + 1694465.

It is an arithmetic number, because the mean of its divisors is an integer number (7907452).

Almost surely, 2^40666884 is an apocalyptic number.

It is an amenable number.

40666884 is an abundant number, since it is smaller than the sum of its proper divisors (54222540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40666884 is a wasteful number, since it uses less digits than its factorization.

40666884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388914 (or 3388912 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 40666884 is about 6377.0591968399. The cubic root of 40666884 is about 343.8853164670.

The spelling of 40666884 in words is "forty million, six hundred sixty-six thousand, eight hundred eighty-four".