779889 has 8 divisors (see below), whose sum is σ = 1134432. Its totient is φ = 472640.

The previous prime is 779887. The next prime is 779899. The reversal of 779889 is 988977.

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 779889 - 2¹ = 779887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (779887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11784 + ... + 11849.

It is an arithmetic number, because the mean of its divisors is an integer number (141804).

2⁷⁷⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

779889 is a deficient number, since it is larger than the sum of its proper divisors (354543).

779889 is a wasteful number, since it uses less digits than its factorization.

779889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23647.

The product of its digits is 254016, while the sum is 48.

The square root of 779889 is about 883.1132430215. The cubic root of 779889 is about 92.0472740658.

It can be divided in two parts, 7798 and 89, that added together give a palindrome (7887).

The spelling of 779889 in words is "seven hundred seventy-nine thousand, eight hundred eighty-nine".