849437080840 has 32 divisors (see below), whose sum is σ = 1911449919960. Its totient is φ = 339736345600.

The previous prime is 849437080829. The next prime is 849437080859. The reversal of 849437080840 is 48080734948.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 746381956356 + 103055124484 = 863934^2 + 321022^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843841 + ... + 1552720.

Almost surely, 2^849437080840 is an apocalyptic number.

It is an amenable number.

849437080840 is an abundant number, since it is smaller than the sum of its proper divisors (1062012839120).

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

849437080840 is a wasteful number, since it uses less digits than its factorization.

849437080840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405433 (or 2405429 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 849437080840 in words is "eight hundred forty-nine billion, four hundred thirty-seven million, eighty thousand, eight hundred forty".