791889 has 12 divisors (see below), whose sum is σ = 1228464. Its totient is φ = 452424.

The previous prime is 791887. The next prime is 791891. The reversal of 791889 is 988197.

It is an interprime number because it is at equal distance from previous prime (791887) and next prime (791891).

It is not a de Polignac number, because 791889 - 2¹ = 791887 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 791889.

It is not an unprimeable number, because it can be changed into a prime (791887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2547 + ... + 2840.

It is an arithmetic number, because the mean of its divisors is an integer number (102372).

2⁷⁹¹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

791889 is a deficient number, since it is larger than the sum of its proper divisors (436575).

791889 is a wasteful number, since it uses less digits than its factorization.

791889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5404 (or 5397 counting only the distinct ones).

The product of its digits is 36288, while the sum is 42.

The square root of 791889 is about 889.8814527790. The cubic root of 791889 is about 92.5169776482.

It can be divided in two parts, 79188 and 9, that added together give a palindrome (79197).

The spelling of 791889 in words is "seven hundred ninety-one thousand, eight hundred eighty-nine".