809693011 has 4 divisors (see below), whose sum is σ = 811442272. Its totient is φ = 807943752.

The previous prime is 809693009. The next prime is 809693033. The reversal of 809693011 is 110396908.

809693011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 809693011 - 2¹ = 809693009 is a prime.

It is a super-2 number, since 2×809693011² = 1311205544124492242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (809693411) 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, 873936 + ... + 874861.

It is an arithmetic number, because the mean of its divisors is an integer number (202860568).

Almost surely, 2^809693011 is an apocalyptic number.

809693011 is a deficient number, since it is larger than the sum of its proper divisors (1749261).

809693011 is a wasteful number, since it uses less digits than its factorization.

809693011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749260.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 809693011 is about 28455.1051834289. The cubic root of 809693011 is about 932.0519731772.

The spelling of 809693011 in words is "eight hundred nine million, six hundred ninety-three thousand, eleven".