788999 has 2 divisors, whose sum is σ = 789000. Its totient is φ = 788998.

The previous prime is 788993. The next prime is 789001. The reversal of 788999 is 999887.

Added to its reverse (999887) it gives a triangular number (1788886 = T₁₈₉₁).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-788999 is a prime.

It is a Sophie Germain prime.

Together with 789001, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

788999 is a modest number, since divided by 999 gives 788 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (788993) 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 as a sum of consecutive naturals, namely, 394499 + 394500.

It is an arithmetic number, because the mean of its divisors is an integer number (394500).

2⁷⁸⁸⁹⁹⁹ is an apocalyptic number.

788999 is a deficient number, since it is larger than the sum of its proper divisors (1).

788999 is an equidigital number, since it uses as much as digits as its factorization.

788999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 50.

The square root of 788999 is about 888.2561567476. The cubic root of 788999 is about 92.4042935106.

Adding to 788999 its reverse (999887), we get a triangular number (1788886 = T₁₈₉₁).

The spelling of 788999 in words is "seven hundred eighty-eight thousand, nine hundred ninety-nine".