40395684 has 48 divisors (see below), whose sum is σ = 108573696. Its totient is φ = 11450400.

The previous prime is 40395661. The next prime is 40395709. The reversal of 40395684 is 48659304.

It is a super-2 number, since 2×40395684² = 3263622571655712, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 9169 + ... + 12839.

It is an arithmetic number, because the mean of its divisors is an integer number (2261952).

Almost surely, 2^40395684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40395684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54286848).

40395684 is an abundant number, since it is smaller than the sum of its proper divisors (68178012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40395684 is a wasteful number, since it uses less digits than its factorization.

40395684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816 (or 3814 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 40395684 is about 6355.7599073596. The cubic root of 40395684 is about 343.1191747877.

The spelling of 40395684 in words is "forty million, three hundred ninety-five thousand, six hundred eighty-four".