862849 has 4 divisors (see below), whose sum is σ = 929236. Its totient is φ = 796464.

The previous prime is 862819. The next prime is 862861. The reversal of 862849 is 948268.

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 540225 + 322624 = 735^2 + 568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-862849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (862819) 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, 33174 + ... + 33199.

It is an arithmetic number, because the mean of its divisors is an integer number (232309).

2⁸⁶²⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

862849 is a deficient number, since it is larger than the sum of its proper divisors (66387).

862849 is a wasteful number, since it uses less digits than its factorization.

862849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66386.

The product of its digits is 27648, while the sum is 37.

The square root of 862849 is about 928.8966573306. The cubic root of 862849 is about 95.2017503739.

It can be divided in two parts, 862 and 849, that added together give a triangular number (1711 = T₅₈).

The spelling of 862849 in words is "eight hundred sixty-two thousand, eight hundred forty-nine".