798009 has 4 divisors (see below), whose sum is σ = 1064016. Its totient is φ = 532004.

The previous prime is 797987. The next prime is 798023. The reversal of 798009 is 900897.

798009 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, and also an emirpimes, since its reverse is a distinct semiprime: 900897 = 3 ⋅300299.

It is a cyclic number.

It is not a de Polignac number, because 798009 - 2⁵ = 797977 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (798059) 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, 132999 + ... + 133004.

It is an arithmetic number, because the mean of its divisors is an integer number (266004).

2⁷⁹⁸⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

798009 is a deficient number, since it is larger than the sum of its proper divisors (266007).

798009 is a wasteful number, since it uses less digits than its factorization.

798009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266006.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 798009 is about 893.3134948046. The cubic root of 798009 is about 92.7547010014.

The spelling of 798009 in words is "seven hundred ninety-eight thousand, nine".