8538149 has 2 divisors, whose sum is σ = 8538150. Its totient is φ = 8538148.

The previous prime is 8538143. The next prime is 8538193. The reversal of 8538149 is 9418358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5207524 + 3330625 = 2282^2 + 1825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8538149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8538143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4269074 + 4269075.

It is an arithmetic number, because the mean of its divisors is an integer number (4269075).

Almost surely, 2^8538149 is an apocalyptic number.

It is an amenable number.

8538149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8538149 is an equidigital number, since it uses as much as digits as its factorization.

8538149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 8538149 is about 2922.0111224977. The cubic root of 8538149 is about 204.3876152718.

The spelling of 8538149 in words is "eight million, five hundred thirty-eight thousand, one hundred forty-nine".