879969 has 8 divisors (see below), whose sum is σ = 1177632. Its totient is φ = 584480.

The previous prime is 879961. The next prime is 879973. The reversal of 879969 is 969978.

It is a happy number.

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 879969 - 2³ = 879961 is a prime.

It is a super-2 number, since 2×879969² = 1548690881922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (879961) 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 7 ways as a sum of consecutive naturals, for example, 1282 + ... + 1844.

It is an arithmetic number, because the mean of its divisors is an integer number (147204).

2⁸⁷⁹⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

879969 is a deficient number, since it is larger than the sum of its proper divisors (297663).

879969 is a wasteful number, since it uses less digits than its factorization.

879969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087.

The product of its digits is 244944, while the sum is 48.

The square root of 879969 is about 938.0666287637. The cubic root of 879969 is about 95.8272718703.

Subtracting 879969 from its reverse (969978), we obtain a palindrome (90009).

The spelling of 879969 in words is "eight hundred seventy-nine thousand, nine hundred sixty-nine".