847988 has 6 divisors (see below), whose sum is σ = 1483986. Its totient is φ = 423992.

The previous prime is 847969. The next prime is 847991. The reversal of 847988 is 889748.

It is a happy number.

847988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 595984 + 252004 = 772^2 + 502^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105995 + ... + 106002.

It is an arithmetic number, because the mean of its divisors is an integer number (247331).

2⁸⁴⁷⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

847988 is a deficient number, since it is larger than the sum of its proper divisors (635998).

847988 is a wasteful number, since it uses less digits than its factorization.

847988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212001 (or 211999 counting only the distinct ones).

The product of its digits is 129024, while the sum is 44.

The square root of 847988 is about 920.8626390510. The cubic root of 847988 is about 94.6520233472.

The spelling of 847988 in words is "eight hundred forty-seven thousand, nine hundred eighty-eight".