847204040 has 16 divisors (see below), whose sum is σ = 1906209180. Its totient is φ = 338881600.

The previous prime is 847204019. The next prime is 847204087. The reversal of 847204040 is 40402748.

It can be written as a sum of positive squares in 2 ways, for example, as 712783204 + 134420836 = 26698^2 + 11594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 847203994 and 847204012.

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 3 ways as a sum of consecutive naturals, for example, 10590011 + ... + 10590090.

Almost surely, 2^847204040 is an apocalyptic number.

It is an amenable number.

847204040 is an abundant number, since it is smaller than the sum of its proper divisors (1059005140).

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

847204040 is a wasteful number, since it uses less digits than its factorization.

847204040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21180112 (or 21180108 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 847204040 is about 29106.7696593078. The cubic root of 847204040 is about 946.2284593796.

Adding to 847204040 its reverse (40402748), we get a palindrome (887606788).

The spelling of 847204040 in words is "eight hundred forty-seven million, two hundred four thousand, forty".