40404566 has 8 divisors (see below), whose sum is σ = 61337304. Its totient is φ = 19958800.

The previous prime is 40404547. The next prime is 40404571. The reversal of 40404566 is 66540404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121535 + ... + 121866.

It is an arithmetic number, because the mean of its divisors is an integer number (7667163).

Almost surely, 2^40404566 is an apocalyptic number.

40404566 is a deficient number, since it is larger than the sum of its proper divisors (20932738).

40404566 is a wasteful number, since it uses less digits than its factorization.

40404566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243486.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 40404566 is about 6356.4586052298. The cubic root of 40404566 is about 343.1443207181.

The spelling of 40404566 in words is "forty million, four hundred four thousand, five hundred sixty-six".