809920359 has 12 divisors (see below), whose sum is σ = 1186363152. Its totient is φ = 532341600.

The previous prime is 809920357. The next prime is 809920369. The reversal of 809920359 is 953029908.

809920359 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 809920359 - 2¹ = 809920357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809920357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633102 + ... + 634379.

It is an arithmetic number, because the mean of its divisors is an integer number (98863596).

Almost surely, 2^809920359 is an apocalyptic number.

809920359 is a deficient number, since it is larger than the sum of its proper divisors (376442793).

809920359 is a wasteful number, since it uses less digits than its factorization.

809920359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267558 (or 1267555 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 809920359 is about 28459.0997573711. The cubic root of 809920359 is about 932.1391997843.

The spelling of 809920359 in words is "eight hundred nine million, nine hundred twenty thousand, three hundred fifty-nine".