809345898 has 32 divisors (see below), whose sum is σ = 1823886720. Its totient is φ = 265980960.

The previous prime is 809345897. The next prime is 809345899. The reversal of 809345898 is 898543908.

It is a happy number.

809345898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (809345897) and next prime (809345899).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (809345897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101715 + ... + 109382.

It is an arithmetic number, because the mean of its divisors is an integer number (56996460).

Almost surely, 2^809345898 is an apocalyptic number.

809345898 is an abundant number, since it is smaller than the sum of its proper divisors (1014540822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809345898 is a wasteful number, since it uses less digits than its factorization.

809345898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211179 (or 211173 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 809345898 is about 28449.0052198667. The cubic root of 809345898 is about 931.9187648316.

The spelling of 809345898 in words is "eight hundred nine million, three hundred forty-five thousand, eight hundred ninety-eight".