8253985 has 8 divisors (see below), whose sum is σ = 9925416. Its totient is φ = 6589440.

The previous prime is 8253977. The next prime is 8253989. The reversal of 8253985 is 5893528.

8253985 = 2031² + 2032².

It can be written as a sum of positive squares in 4 ways, for example, as 3444736 + 4809249 = 1856^2 + 2193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8253985 - 2³ = 8253977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8253989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1455 + ... + 4315.

It is an arithmetic number, because the mean of its divisors is an integer number (1240677).

Almost surely, 2^8253985 is an apocalyptic number.

8253985 is the 2032-nd centered square number.

It is an amenable number.

8253985 is a deficient number, since it is larger than the sum of its proper divisors (1671431).

8253985 is a wasteful number, since it uses less digits than its factorization.

8253985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3443.

The product of its digits is 86400, while the sum is 40.

The square root of 8253985 is about 2872.9749389788. The cubic root of 8253985 is about 202.0945298174.

The spelling of 8253985 in words is "eight million, two hundred fifty-three thousand, nine hundred eighty-five".