8529139 has 2 divisors, whose sum is σ = 8529140. Its totient is φ = 8529138.

The previous prime is 8529109. The next prime is 8529173. The reversal of 8529139 is 9319258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8529139 - 2¹³ = 8520947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8529098 and 8529107.

It is not a weakly prime, because it can be changed into another prime (8529109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4264569 + 4264570.

It is an arithmetic number, because the mean of its divisors is an integer number (4264570).

Almost surely, 2^8529139 is an apocalyptic number.

8529139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8529139 is an equidigital number, since it uses as much as digits as its factorization.

8529139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 8529139 is about 2920.4689691897. The cubic root of 8529139 is about 204.3156956805.

It can be divided in two parts, 8529 and 139, that added together give a palindrome (8668).

The spelling of 8529139 in words is "eight million, five hundred twenty-nine thousand, one hundred thirty-nine".