849881 has 4 divisors (see below), whose sum is σ = 899892. Its totient is φ = 799872.

The previous prime is 849869. The next prime is 849883. The reversal of 849881 is 188948.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 235225 = 784^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 849881 - 2¹⁰ = 848857 is a prime.

It is a super-2 number, since 2×849881² = 1444595428322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24980 + ... + 25013.

It is an arithmetic number, because the mean of its divisors is an integer number (224973).

2⁸⁴⁹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

849881 is a deficient number, since it is larger than the sum of its proper divisors (50011).

849881 is a wasteful number, since it uses less digits than its factorization.

849881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50010.

The product of its digits is 18432, while the sum is 38.

The square root of 849881 is about 921.8899066591. The cubic root of 849881 is about 94.7224029272.

The spelling of 849881 in words is "eight hundred forty-nine thousand, eight hundred eighty-one".