8505029 has 4 divisors (see below), whose sum is σ = 9159276. Its totient is φ = 7850784.

The previous prime is 8505023. The next prime is 8505031. The reversal of 8505029 is 9205058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5522500 + 2982529 = 2350^2 + 1727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8505029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8504992 and 8505010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327104 + ... + 327129.

It is an arithmetic number, because the mean of its divisors is an integer number (2289819).

Almost surely, 2^8505029 is an apocalyptic number.

It is an amenable number.

8505029 is a deficient number, since it is larger than the sum of its proper divisors (654247).

8505029 is a wasteful number, since it uses less digits than its factorization.

8505029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654246.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 8505029 is about 2916.3382862761. The cubic root of 8505029 is about 204.1229954815.

Adding to 8505029 its sum of digits (29), we get a palindrome (8505058).

The spelling of 8505029 in words is "eight million, five hundred five thousand, twenty-nine".