8440391850 has 96 divisors (see below), whose sum is σ = 24037032960. Its totient is φ = 1938456000.

The previous prime is 8440391849. The next prime is 8440391867. The reversal of 8440391850 is 581930448.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103266 + ... + 165965.

It is an arithmetic number, because the mean of its divisors is an integer number (250385760).

Almost surely, 2^8440391850 is an apocalyptic number.

8440391850 is an abundant number, since it is smaller than the sum of its proper divisors (15596641110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8440391850 is a wasteful number, since it uses less digits than its factorization.

8440391850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269276 (or 269271 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 8440391850 is about 91871.6052434048. The cubic root of 8440391850 is about 2036.0457692450.

The spelling of 8440391850 in words is "eight billion, four hundred forty million, three hundred ninety-one thousand, eight hundred fifty".