8969985 has 24 divisors (see below), whose sum is σ = 15845544. Its totient is φ = 4692480.

The previous prime is 8969971. The next prime is 8969993. The reversal of 8969985 is 5899698.

It can be written as a sum of positive squares in 4 ways, for example, as 1418481 + 7551504 = 1191^2 + 2748^2 .

It is not a de Polignac number, because 8969985 - 2⁶ = 8969921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 505 + ... + 4265.

It is an arithmetic number, because the mean of its divisors is an integer number (660231).

Almost surely, 2^8969985 is an apocalyptic number.

It is an amenable number.

8969985 is a deficient number, since it is larger than the sum of its proper divisors (6875559).

8969985 is a wasteful number, since it uses less digits than its factorization.

8969985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825 (or 3822 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 8969985 is about 2994.9933221962. The cubic root of 8969985 is about 207.7768887855.

The spelling of 8969985 in words is "eight million, nine hundred sixty-nine thousand, nine hundred eighty-five".