8216449 has 4 divisors (see below), whose sum is σ = 8247040. Its totient is φ = 8185860.

The previous prime is 8216447. The next prime is 8216459. The reversal of 8216449 is 9446128.

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 8216449 - 2¹ = 8216447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8216447) 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, 14889 + ... + 15430.

It is an arithmetic number, because the mean of its divisors is an integer number (2061760).

Almost surely, 2^8216449 is an apocalyptic number.

It is an amenable number.

8216449 is a deficient number, since it is larger than the sum of its proper divisors (30591).

8216449 is a wasteful number, since it uses less digits than its factorization.

8216449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30590.

The product of its digits is 13824, while the sum is 34.

The square root of 8216449 is about 2866.4348937312. The cubic root of 8216449 is about 201.7877144404.

The spelling of 8216449 in words is "eight million, two hundred sixteen thousand, four hundred forty-nine".