8970809 has 4 divisors (see below), whose sum is σ = 9053220. Its totient is φ = 8888400.

The previous prime is 8970803. The next prime is 8970821. The reversal of 8970809 is 9080798.

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 6175225 + 2795584 = 2485^2 + 1672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8970809 is a prime.

It is a super-2 number, since 2×8970809² = 160950828228962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8970803) 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, 41042 + ... + 41259.

It is an arithmetic number, because the mean of its divisors is an integer number (2263305).

Almost surely, 2^8970809 is an apocalyptic number.

It is an amenable number.

8970809 is a deficient number, since it is larger than the sum of its proper divisors (82411).

8970809 is a wasteful number, since it uses less digits than its factorization.

8970809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82410.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 8970809 is about 2995.1308819482. The cubic root of 8970809 is about 207.7832508517.

It can be divided in two parts, 8970 and 809, that added together give a palindrome (9779).

The spelling of 8970809 in words is "eight million, nine hundred seventy thousand, eight hundred nine".