40475866 has 4 divisors (see below), whose sum is σ = 60713802. Its totient is φ = 20237932.

The previous prime is 40475849. The next prime is 40475873. The reversal of 40475866 is 66857404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20930625 + 19545241 = 4575^2 + 4421^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10118965 + ... + 10118968.

Almost surely, 2^40475866 is an apocalyptic number.

40475866 is a deficient number, since it is larger than the sum of its proper divisors (20237936).

40475866 is a wasteful number, since it uses less digits than its factorization.

40475866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20237935.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 40475866 is about 6362.0646019983. The cubic root of 40475866 is about 343.3460455489.

The spelling of 40475866 in words is "forty million, four hundred seventy-five thousand, eight hundred sixty-six".