798979 has 4 divisors (see below), whose sum is σ = 826560. Its totient is φ = 771400.

The previous prime is 798961. The next prime is 799003. The reversal of 798979 is 979897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979897 = 17 ⋅57641.

It is not a de Polignac number, because 798979 - 2¹¹ = 796931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13747 + ... + 13804.

It is an arithmetic number, because the mean of its divisors is an integer number (206640).

2⁷⁹⁸⁹⁷⁹ is an apocalyptic number.

798979 is a deficient number, since it is larger than the sum of its proper divisors (27581).

798979 is a wasteful number, since it uses less digits than its factorization.

798979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27580.

The product of its digits is 285768, while the sum is 49.

The square root of 798979 is about 893.8562524254. The cubic root of 798979 is about 92.7922676747.

The spelling of 798979 in words is "seven hundred ninety-eight thousand, nine hundred seventy-nine".