847942779798 has 48 divisors (see below), whose sum is σ = 1880722022400. Its totient is φ = 276016791600.

The previous prime is 847942779791. The next prime is 847942779841. The reversal of 847942779798 is 897977249748.

847942779798 is a `hidden beast` number, since 8 + 479 + 4 + 2 + 7 + 79 + 79 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (847942779791) 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, 2483478 + ... + 2804201.

It is an arithmetic number, because the mean of its divisors is an integer number (39181708800).

Almost surely, 2^847942779798 is an apocalyptic number.

847942779798 is an abundant number, since it is smaller than the sum of its proper divisors (1032779242602).

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

847942779798 is a wasteful number, since it uses less digits than its factorization.

847942779798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5287897 (or 5287894 counting only the distinct ones).

The product of its digits is 3584673792, while the sum is 81.

The spelling of 847942779798 in words is "eight hundred forty-seven billion, nine hundred forty-two million, seven hundred seventy-nine thousand, seven hundred ninety-eight".