798739 has 4 divisors (see below), whose sum is σ = 800656. Its totient is φ = 796824.

The previous prime is 798737. The next prime is 798751. The reversal of 798739 is 937897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937897 = 19 ⋅49363.

It is a cyclic number.

It is not a de Polignac number, because 798739 - 2¹ = 798737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 798695 and 798704.

It is not an unprimeable number, because it can be changed into a prime (798737) 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, 39 + ... + 1264.

It is an arithmetic number, because the mean of its divisors is an integer number (200164).

2⁷⁹⁸⁷³⁹ is an apocalyptic number.

798739 is a deficient number, since it is larger than the sum of its proper divisors (1917).

798739 is a wasteful number, since it uses less digits than its factorization.

798739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its digits is 95256, while the sum is 43.

The square root of 798739 is about 893.7219925682. The cubic root of 798739 is about 92.7829756597.

The spelling of 798739 in words is "seven hundred ninety-eight thousand, seven hundred thirty-nine".