40518959 has 8 divisors (see below), whose sum is σ = 44815680.
Its totient is φ = 36390816.
The previous prime is 40518949. The next prime is 40518967. The reversal of 40518959 is 95981504.
It is a happy number.
40518959 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 40518959 - 216 = 40453423 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (40518949) 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, 41639 + ... + 42600.
It is an arithmetic number, because the mean of its divisors is an integer number (5601960).
Almost surely, 240518959 is an apocalyptic number.
40518959 is a deficient number, since it is larger than the sum of its proper divisors (4296721).
40518959 is a wasteful number, since it uses less digits than its factorization.
40518959 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 84289.
The product of its (nonzero) digits is 64800, while the sum is 41.
The square root of 40518959 is about 6365.4504161135.
The cubic root of 40518959 is about 343.4678511653.
The spelling of 40518959 in words is "forty million, five hundred eighteen thousand, nine hundred fifty-nine".