809917448 has 16 divisors (see below), whose sum is σ = 1539984960. Its totient is φ = 399254800.

The previous prime is 809917447. The next prime is 809917453. The reversal of 809917448 is 844719908.

It is a junction number, because it is equal to n+sod(n) for n = 809917396 and 809917405.

It is not an unprimeable number, because it can be changed into a prime (809917447) 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, 712388 + ... + 713523.

It is an arithmetic number, because the mean of its divisors is an integer number (96249060).

Almost surely, 2^809917448 is an apocalyptic number.

It is an amenable number.

809917448 is a deficient number, since it is larger than the sum of its proper divisors (730067512).

809917448 is a wasteful number, since it uses less digits than its factorization.

809917448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425988 (or 1425984 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 809917448 is about 28459.0486137538. The cubic root of 809917448 is about 932.1380830241.

The spelling of 809917448 in words is "eight hundred nine million, nine hundred seventeen thousand, four hundred forty-eight".