40664446 has 16 divisors (see below), whose sum is σ = 64501200. Its totient is φ = 19173888.

The previous prime is 40664401. The next prime is 40664453. The reversal of 40664446 is 64446604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6366 + ... + 11038.

It is an arithmetic number, because the mean of its divisors is an integer number (4031325).

Almost surely, 2^40664446 is an apocalyptic number.

40664446 is a deficient number, since it is larger than the sum of its proper divisors (23836754).

40664446 is a wasteful number, since it uses less digits than its factorization.

40664446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 40664446 is about 6376.8680400334. The cubic root of 40664446 is about 343.8784442975.

The spelling of 40664446 in words is "forty million, six hundred sixty-four thousand, four hundred forty-six".