797894809 has 8 divisors (see below), whose sum is σ = 818102880. Its totient is φ = 777722400.

The previous prime is 797894803. The next prime is 797894861. The reversal of 797894809 is 908498797.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 797894809 - 2⁷ = 797894681 is a prime.

It is a super-2 number, since 2×797894809² = 1273272252458292962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (797894803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39702 + ... + 56320.

It is an arithmetic number, because the mean of its divisors is an integer number (102262860).

Almost surely, 2^797894809 is an apocalyptic number.

It is an amenable number.

797894809 is a deficient number, since it is larger than the sum of its proper divisors (20208071).

797894809 is a wasteful number, since it uses less digits than its factorization.

797894809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17831.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 797894809 is about 28247.0318617727. The cubic root of 797894809 is about 927.5027654953.

The spelling of 797894809 in words is "seven hundred ninety-seven million, eight hundred ninety-four thousand, eight hundred nine".