8516149 has 4 divisors (see below), whose sum is σ = 8655820. Its totient is φ = 8376480.

The previous prime is 8516083. The next prime is 8516153. The reversal of 8516149 is 9416158.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9416158 = 2 ⋅4708079.

It can be written as a sum of positive squares in 2 ways, for example, as 4231249 + 4284900 = 2057^2 + 2070^2 .

It is a cyclic number.

It is not a de Polignac number, because 8516149 - 2¹³ = 8507957 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 (8516159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69744 + ... + 69865.

It is an arithmetic number, because the mean of its divisors is an integer number (2163955).

Almost surely, 2^8516149 is an apocalyptic number.

It is an amenable number.

8516149 is a deficient number, since it is larger than the sum of its proper divisors (139671).

8516149 is a wasteful number, since it uses less digits than its factorization.

8516149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139670.

The product of its digits is 8640, while the sum is 34.

The square root of 8516149 is about 2918.2441638766. The cubic root of 8516149 is about 204.2119177407.

Subtracting 8516149 from its reverse (9416158), we obtain a palindrome (900009).

The spelling of 8516149 in words is "eight million, five hundred sixteen thousand, one hundred forty-nine".