40384855 has 8 divisors (see below), whose sum is σ = 55384992. Its totient is φ = 27692448.

The previous prime is 40384831. The next prime is 40384859. The reversal of 40384855 is 55848304.

It is a happy number.

40384855 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 not a de Polignac number, because 40384855 - 2¹¹ = 40382807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40384859) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 576892 + ... + 576961.

It is an arithmetic number, because the mean of its divisors is an integer number (6923124).

Almost surely, 2^40384855 is an apocalyptic number.

40384855 is a deficient number, since it is larger than the sum of its proper divisors (15000137).

40384855 is a wasteful number, since it uses less digits than its factorization.

40384855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153865.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 40384855 is about 6354.9079458321. The cubic root of 40384855 is about 343.0885116966.

It can be divided in two parts, 403 and 84855, that added together give a palindrome (85258).

The spelling of 40384855 in words is "forty million, three hundred eighty-four thousand, eight hundred fifty-five".