40321838 has 8 divisors (see below), whose sum is σ = 63666120. Its totient is φ = 19099800.

The previous prime is 40321811. The next prime is 40321871. The reversal of 40321838 is 83812304.

It is a happy number.

40321838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40321838.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 530513 + ... + 530588.

It is an arithmetic number, because the mean of its divisors is an integer number (7958265).

Almost surely, 2^40321838 is an apocalyptic number.

40321838 is a deficient number, since it is larger than the sum of its proper divisors (23344282).

40321838 is a wasteful number, since it uses less digits than its factorization.

40321838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061122.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 40321838 is about 6349.9478738018. The cubic root of 40321838 is about 342.9099656874.

The spelling of 40321838 in words is "forty million, three hundred twenty-one thousand, eight hundred thirty-eight".