978879 has 8 divisors (see below), whose sum is σ = 1423872. Its totient is φ = 593240.

The previous prime is 978871. The next prime is 978883.

978879 is nontrivially palindromic in base 10.

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 978879 - 2³ = 978871 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14799 + ... + 14864.

It is an arithmetic number, because the mean of its divisors is an integer number (177984).

2⁹⁷⁸⁸⁷⁹ is an apocalyptic number.

978879 is a deficient number, since it is larger than the sum of its proper divisors (444993).

978879 is a wasteful number, since it uses less digits than its factorization.

978879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29677.

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

The square root of 978879 is about 989.3831411541. The cubic root of 978879 is about 99.2909510449.

The spelling of 978879 in words is "nine hundred seventy-eight thousand, eight hundred seventy-nine".