978959 has 4 divisors (see below), whose sum is σ = 981360. Its totient is φ = 976560.

The previous prime is 978947. The next prime is 978973. The reversal of 978959 is 959879.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 978959 - 2¹² = 974863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978959.

It is not an unprimeable number, because it can be changed into a prime (978359) 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 3 ways as a sum of consecutive naturals, for example, 419 + ... + 1460.

It is an arithmetic number, because the mean of its divisors is an integer number (245340).

2⁹⁷⁸⁹⁵⁹ is an apocalyptic number.

978959 is a deficient number, since it is larger than the sum of its proper divisors (2401).

978959 is a wasteful number, since it uses less digits than its factorization.

978959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400.

The product of its digits is 204120, while the sum is 47.

The square root of 978959 is about 989.4235695596. The cubic root of 978959 is about 99.2936558599.

The spelling of 978959 in words is "nine hundred seventy-eight thousand, nine hundred fifty-nine".