40183855 has 4 divisors (see below), whose sum is σ = 48220632. Its totient is φ = 32147080.

The previous prime is 40183849. The next prime is 40183859. The reversal of 40183855 is 55838104.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40183855 - 2⁵ = 40183823 is a prime.

It is a super-3 number, since 3×40183855³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40183855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40183859) 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, 4018381 + ... + 4018390.

It is an arithmetic number, because the mean of its divisors is an integer number (12055158).

Almost surely, 2^40183855 is an apocalyptic number.

40183855 is a deficient number, since it is larger than the sum of its proper divisors (8036777).

40183855 is an equidigital number, since it uses as much as digits as its factorization.

40183855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8036776.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 40183855 is about 6339.0736704979. The cubic root of 40183855 is about 342.5183679566.

The spelling of 40183855 in words is "forty million, one hundred eighty-three thousand, eight hundred fifty-five".