809522941 has 4 divisors (see below), whose sum is σ = 812748384. Its totient is φ = 806297500.

The previous prime is 809522939. The next prime is 809522947. The reversal of 809522941 is 149225908.

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 809522941 - 2¹ = 809522939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 809522894 and 809522903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809522947) 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, 1612345 + ... + 1612846.

It is an arithmetic number, because the mean of its divisors is an integer number (203187096).

Almost surely, 2^809522941 is an apocalyptic number.

It is an amenable number.

809522941 is a deficient number, since it is larger than the sum of its proper divisors (3225443).

809522941 is a wasteful number, since it uses less digits than its factorization.

809522941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225442.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 809522941 is about 28452.1166347954. The cubic root of 809522941 is about 931.9867117442.

The spelling of 809522941 in words is "eight hundred nine million, five hundred twenty-two thousand, nine hundred forty-one".