40105866 has 16 divisors (see below), whose sum is σ = 80476704. Its totient is φ = 13324464.

The previous prime is 40105861. The next prime is 40105963. The reversal of 40105866 is 66850104.

It is not an unprimeable number, because it can be changed into a prime (40105861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9045 + ... + 12728.

It is an arithmetic number, because the mean of its divisors is an integer number (5029794).

Almost surely, 2^40105866 is an apocalyptic number.

40105866 is an abundant number, since it is smaller than the sum of its proper divisors (40370838).

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

40105866 is a wasteful number, since it uses less digits than its factorization.

40105866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22085.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 40105866 is about 6332.9192320762. The cubic root of 40105866 is about 342.2966374050.

The spelling of 40105866 in words is "forty million, one hundred five thousand, eight hundred sixty-six".