8189949 has 4 divisors (see below), whose sum is σ = 10919936. Its totient is φ = 5459964.

The previous prime is 8189947. The next prime is 8189957. The reversal of 8189949 is 9499818.

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 not a de Polignac number, because 8189949 - 2¹ = 8189947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8189898 and 8189907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8189941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364989 + ... + 1364994.

It is an arithmetic number, because the mean of its divisors is an integer number (2729984).

Almost surely, 2^8189949 is an apocalyptic number.

It is an amenable number.

8189949 is a deficient number, since it is larger than the sum of its proper divisors (2729987).

8189949 is a wasteful number, since it uses less digits than its factorization.

8189949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729986.

The product of its digits is 186624, while the sum is 48.

The square root of 8189949 is about 2861.8086938159. The cubic root of 8189949 is about 201.5705430238.

The spelling of 8189949 in words is "eight million, one hundred eighty-nine thousand, nine hundred forty-nine".