789997 has 8 divisors (see below), whose sum is σ = 864416. Its totient is φ = 717552.

The previous prime is 789979. The next prime is 790003. The reversal of 789997 is 799987.

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 789997 - 2¹⁹ = 265709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 789997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (108052).

2⁷⁸⁹⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

789997 is a deficient number, since it is larger than the sum of its proper divisors (74419).

789997 is a wasteful number, since it uses less digits than its factorization.

789997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987.

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

The square root of 789997 is about 888.8177540981. The cubic root of 789997 is about 92.4432376367.

The spelling of 789997 in words is "seven hundred eighty-nine thousand, nine hundred ninety-seven".