877969 has 3 divisors (see below), whose sum is σ = 878907. Its totient is φ = 877032.

The previous prime is 877949. The next prime is 877997. The reversal of 877969 is 969778.

The square root of 877969 is 937.

It is a perfect power (a square), and thus also a powerful number.

877969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 46225 + 831744 = 215^2 + 912^2 .

It is not a de Polignac number, because 877969 - 2⁵ = 877937 is a prime.

It is a super-2 number, since 2×877969² = 1541659129922, which contains 22 as substring.

It is a Duffinian number.

877969 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (877909) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 469 + ... + 1405.

It is an arithmetic number, because the mean of its divisors is an integer number (292969).

2⁸⁷⁷⁹⁶⁹ is an apocalyptic number.

877969 is the 937-th square number.

877969 is the 469-th centered octagonal number.

It is an amenable number.

877969 is a deficient number, since it is larger than the sum of its proper divisors (938).

877969 is an frugal number, since it uses more digits than its factorization.

877969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874 (or 937 counting only the distinct ones).

The product of its digits is 190512, while the sum is 46.

The cubic root of 877969 is about 95.7546178241.

Subtracting 877969 from its reverse (969778), we obtain a square (91809 = 303²).

It can be divided in two parts, 8 and 77969, that added together give a palindrome (77977).

The spelling of 877969 in words is "eight hundred seventy-seven thousand, nine hundred sixty-nine".