40821386 has 32 divisors (see below), whose sum is σ = 70632000. Its totient is φ = 17563392.

The previous prime is 40821359. The next prime is 40821401. The reversal of 40821386 is 68312804.

40821386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17645 + ... + 19823.

It is an arithmetic number, because the mean of its divisors is an integer number (2207250).

Almost surely, 2^40821386 is an apocalyptic number.

40821386 is a deficient number, since it is larger than the sum of its proper divisors (29810614).

40821386 is a wasteful number, since it uses less digits than its factorization.

40821386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 40821386 is about 6389.1616038413. The cubic root of 40821386 is about 344.3202635327.

The spelling of 40821386 in words is "forty million, eight hundred twenty-one thousand, three hundred eighty-six".