840448107849 has 24 divisors (see below), whose sum is σ = 1303650784800. Its totient is φ = 480219729024.

The previous prime is 840448107833. The next prime is 840448107907. The reversal of 840448107849 is 948701844048.

840448107849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840448107849 - 2⁴ = 840448107833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840448107349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1796962 + ... + 2215844.

It is an arithmetic number, because the mean of its divisors is an integer number (54318782700).

Almost surely, 2^840448107849 is an apocalyptic number.

It is an amenable number.

840448107849 is a deficient number, since it is larger than the sum of its proper divisors (463202676951).

840448107849 is a wasteful number, since it uses less digits than its factorization.

840448107849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432549 (or 432542 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 57.

The spelling of 840448107849 in words is "eight hundred forty billion, four hundred forty-eight million, one hundred seven thousand, eight hundred forty-nine".