40055843 has 4 divisors (see below), whose sum is σ = 40277328. Its totient is φ = 39834360.

The previous prime is 40055839. The next prime is 40055849. The reversal of 40055843 is 34855004.

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

It is a cyclic number.

It is not a de Polignac number, because 40055843 - 2² = 40055839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40055849) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 110471 + ... + 110832.

It is an arithmetic number, because the mean of its divisors is an integer number (10069332).

Almost surely, 2^40055843 is an apocalyptic number.

40055843 is a deficient number, since it is larger than the sum of its proper divisors (221485).

40055843 is a wasteful number, since it uses less digits than its factorization.

40055843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221484.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 40055843 is about 6328.9685573559. The cubic root of 40055843 is about 342.1542656421.

The spelling of 40055843 in words is "forty million, fifty-five thousand, eight hundred forty-three".