788989 has 4 divisors (see below), whose sum is σ = 805824. Its totient is φ = 772156.

The previous prime is 788971. The next prime is 788993. The reversal of 788989 is 989887.

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.

It is a cyclic number.

It is not a de Polignac number, because 788989 - 2¹¹ = 786941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788959) 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 3 ways as a sum of consecutive naturals, for example, 8347 + ... + 8440.

It is an arithmetic number, because the mean of its divisors is an integer number (201456).

2⁷⁸⁸⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

788989 is a deficient number, since it is larger than the sum of its proper divisors (16835).

788989 is a wasteful number, since it uses less digits than its factorization.

788989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16834.

The product of its digits is 290304, while the sum is 49.

The square root of 788989 is about 888.2505277229. The cubic root of 788989 is about 92.4039031228.

The spelling of 788989 in words is "seven hundred eighty-eight thousand, nine hundred eighty-nine".