8213849 has 4 divisors (see below), whose sum is σ = 9387264. Its totient is φ = 7040436.

The previous prime is 8213819. The next prime is 8213851. The reversal of 8213849 is 9483128.

It is a happy number.

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 8213849 - 2²⁰ = 7165273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8213819) 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, 586697 + ... + 586710.

It is an arithmetic number, because the mean of its divisors is an integer number (2346816).

Almost surely, 2^8213849 is an apocalyptic number.

It is an amenable number.

8213849 is a deficient number, since it is larger than the sum of its proper divisors (1173415).

8213849 is a wasteful number, since it uses less digits than its factorization.

8213849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173414.

The product of its digits is 13824, while the sum is 35.

The square root of 8213849 is about 2865.9813328073. The cubic root of 8213849 is about 201.7664277342.

It can be divided in two parts, 82 and 13849, that added together give a palindrome (13931).

The spelling of 8213849 in words is "eight million, two hundred thirteen thousand, eight hundred forty-nine".