8129149 has 6 divisors (see below), whose sum is σ = 9456414. Its totient is φ = 6967800.

The previous prime is 8129141. The next prime is 8129153. The reversal of 8129149 is 9419218.

It can be written as a sum of positive squares in only one way, i.e., 5968249 + 2160900 = 2443^2 + 1470^2 .

It is not a de Polignac number, because 8129149 - 2³ = 8129141 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 (8129141) 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 5 ways as a sum of consecutive naturals, for example, 82902 + ... + 82999.

It is an arithmetic number, because the mean of its divisors is an integer number (1576069).

Almost surely, 2^8129149 is an apocalyptic number.

It is an amenable number.

8129149 is a deficient number, since it is larger than the sum of its proper divisors (1327265).

8129149 is a wasteful number, since it uses less digits than its factorization.

8129149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165915 (or 165908 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 8129149 is about 2851.1662526061. The cubic root of 8129149 is about 201.0705015755.

The spelling of 8129149 in words is "eight million, one hundred twenty-nine thousand, one hundred forty-nine".