40385840489 has 8 divisors (see below), whose sum is σ = 41073570720. Its totient is φ = 39698217856.

The previous prime is 40385840477. The next prime is 40385840491. The reversal of 40385840489 is 98404858304.

40385840489 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 a de Polignac number, because none of the positive numbers 2^k-40385840489 is a prime.

It is a super-2 number, since 2×40385840489² (a number of 22 digits) contains 22 as substring.

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 40385840489.

It is not an unprimeable number, because it can be changed into a prime (40385840389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207577 + ... + 1240569.

It is an arithmetic number, because the mean of its divisors is an integer number (5134196340).

Almost surely, 2^40385840489 is an apocalyptic number.

It is an amenable number.

40385840489 is a deficient number, since it is larger than the sum of its proper divisors (687730231).

40385840489 is a wasteful number, since it uses less digits than its factorization.

40385840489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53799.

The product of its (nonzero) digits is 4423680, while the sum is 53.

The spelling of 40385840489 in words is "forty billion, three hundred eighty-five million, eight hundred forty thousand, four hundred eighty-nine".