867849 has 4 divisors (see below), whose sum is σ = 1157136. Its totient is φ = 578564.

The previous prime is 867829. The next prime is 867857. The reversal of 867849 is 948768.

It is a happy number.

867849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 867849 - 2⁵ = 867817 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 867849.

It is not an unprimeable number, because it can be changed into a prime (867829) 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, 144639 + ... + 144644.

It is an arithmetic number, because the mean of its divisors is an integer number (289284).

2⁸⁶⁷⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

867849 is a deficient number, since it is larger than the sum of its proper divisors (289287).

867849 is a wasteful number, since it uses less digits than its factorization.

867849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289286.

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

The square root of 867849 is about 931.5841346867. The cubic root of 867849 is about 95.3852866391.

The spelling of 867849 in words is "eight hundred sixty-seven thousand, eight hundred forty-nine".