8736129 has 12 divisors (see below), whose sum is σ = 12792676. Its totient is φ = 5743872.

The previous prime is 8736127. The next prime is 8736139. The reversal of 8736129 is 9216378.

It can be written as a sum of positive squares in 2 ways, for example, as 1703025 + 7033104 = 1305^2 + 2652^2 .

It is not a de Polignac number, because 8736129 - 2¹ = 8736127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8736093 and 8736102.

It is not an unprimeable number, because it can be changed into a prime (8736127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5992 + ... + 7305.

Almost surely, 2^8736129 is an apocalyptic number.

It is an amenable number.

8736129 is a deficient number, since it is larger than the sum of its proper divisors (4056547).

8736129 is a wasteful number, since it uses less digits than its factorization.

8736129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13376 (or 13373 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 8736129 is about 2955.6943346699. The cubic root of 8736129 is about 205.9553191184.

Subtracting 8736129 from its reverse (9216378), we obtain a square (480249 = 693²).

The spelling of 8736129 in words is "eight million, seven hundred thirty-six thousand, one hundred twenty-nine".