800675009 has 4 divisors (see below), whose sum is σ = 800808960. Its totient is φ = 800541060.

The previous prime is 800674999. The next prime is 800675041. The reversal of 800675009 is 900576008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 800675009 - 2¹⁶ = 800609473 is a prime.

It is a super-3 number, since 3×800675009³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 800675009.

It is not an unprimeable number, because it can be changed into a prime (800675059) 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, 57569 + ... + 70110.

It is an arithmetic number, because the mean of its divisors is an integer number (200202240).

Almost surely, 2^800675009 is an apocalyptic number.

It is an amenable number.

800675009 is a deficient number, since it is larger than the sum of its proper divisors (133951).

800675009 is a wasteful number, since it uses less digits than its factorization.

800675009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133950.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 800675009 is about 28296.2013174914. The cubic root of 800675009 is about 928.5787861767.

Subtracting 800675009 from its reverse (900576008), we obtain a palindrome (99900999).

The spelling of 800675009 in words is "eight hundred million, six hundred seventy-five thousand, nine".