40392668 has 12 divisors (see below), whose sum is σ = 70820232. Its totient is φ = 20158320.

The previous prime is 40392661. The next prime is 40392691. The reversal of 40392668 is 86629304.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40392661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7043 + ... + 11418.

It is an arithmetic number, because the mean of its divisors is an integer number (5901686).

Almost surely, 2^40392668 is an apocalyptic number.

It is an amenable number.

40392668 is a deficient number, since it is larger than the sum of its proper divisors (30427564).

40392668 is a wasteful number, since it uses less digits than its factorization.

40392668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19012 (or 19010 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 40392668 is about 6355.5226378324. The cubic root of 40392668 is about 343.1106353178.

The spelling of 40392668 in words is "forty million, three hundred ninety-two thousand, six hundred sixty-eight".