40909143 has 8 divisors (see below), whose sum is σ = 59504256. Its totient is φ = 24793400.

The previous prime is 40909139. The next prime is 40909151. The reversal of 40909143 is 34190904.

40909143 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 cyclic number.

It is not a de Polignac number, because 40909143 - 2² = 40909139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40909143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40909133) 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, 619803 + ... + 619868.

It is an arithmetic number, because the mean of its divisors is an integer number (7438032).

Almost surely, 2^40909143 is an apocalyptic number.

40909143 is a deficient number, since it is larger than the sum of its proper divisors (18595113).

40909143 is a wasteful number, since it uses less digits than its factorization.

40909143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239685.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 40909143 is about 6396.0255628007. The cubic root of 40909143 is about 344.5668245407.

The spelling of 40909143 in words is "forty million, nine hundred nine thousand, one hundred forty-three".