40404866 has 16 divisors (see below), whose sum is σ = 62691840. Its totient is φ = 19518720.

The previous prime is 40404863. The next prime is 40404899. The reversal of 40404866 is 66840404.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40404863) 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, 4706 + ... + 10146.

It is an arithmetic number, because the mean of its divisors is an integer number (3918240).

Almost surely, 2^40404866 is an apocalyptic number.

40404866 is a deficient number, since it is larger than the sum of its proper divisors (22286974).

40404866 is a wasteful number, since it uses less digits than its factorization.

40404866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5569.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 40404866 is about 6356.4822032316. The cubic root of 40404866 is about 343.1451699872.

The spelling of 40404866 in words is "forty million, four hundred four thousand, eight hundred sixty-six".