847869 has 8 divisors (see below), whose sum is σ = 1233312. Its totient is φ = 513840.

The previous prime is 847853. The next prime is 847871. The reversal of 847869 is 968748.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 847869 - 2⁴ = 847853 is a prime.

It is a super-2 number, since 2×847869² = 1437763682322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 847869.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 847869.

It is not an unprimeable number, because it can be changed into a prime (847069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12814 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (154164).

2⁸⁴⁷⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

847869 is a deficient number, since it is larger than the sum of its proper divisors (385443).

847869 is a wasteful number, since it uses less digits than its factorization.

847869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25707.

The product of its digits is 96768, while the sum is 42.

The square root of 847869 is about 920.7980234557. The cubic root of 847869 is about 94.6475955654.

The spelling of 847869 in words is "eight hundred forty-seven thousand, eight hundred sixty-nine".