8198549 has 4 divisors (see below), whose sum is σ = 8240364. Its totient is φ = 8156736.

The previous prime is 8198521. The next prime is 8198551. The reversal of 8198549 is 9458918.

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 8151025 + 47524 = 2855^2 + 218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8198549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8198249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20612 + ... + 21005.

It is an arithmetic number, because the mean of its divisors is an integer number (2060091).

Almost surely, 2^8198549 is an apocalyptic number.

It is an amenable number.

8198549 is a deficient number, since it is larger than the sum of its proper divisors (41815).

8198549 is a wasteful number, since it uses less digits than its factorization.

8198549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41814.

The product of its digits is 103680, while the sum is 44.

The square root of 8198549 is about 2863.3108458566. The cubic root of 8198549 is about 201.6410725740.

The spelling of 8198549 in words is "eight million, one hundred ninety-eight thousand, five hundred forty-nine".