809345941 has 4 divisors (see below), whose sum is σ = 810424384. Its totient is φ = 808267500.

The previous prime is 809345917. The next prime is 809345947. The reversal of 809345941 is 149543908.

It is a happy number.

809345941 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, 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 809345941 - 2⁷ = 809345813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809345947) 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, 538095 + ... + 539596.

It is an arithmetic number, because the mean of its divisors is an integer number (202606096).

Almost surely, 2^809345941 is an apocalyptic number.

It is an amenable number.

809345941 is a deficient number, since it is larger than the sum of its proper divisors (1078443).

809345941 is a wasteful number, since it uses less digits than its factorization.

809345941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078442.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 809345941 is about 28449.0059756048. The cubic root of 809345941 is about 931.9187813357.

The spelling of 809345941 in words is "eight hundred nine million, three hundred forty-five thousand, nine hundred forty-one".