978986958 has 16 divisors (see below), whose sum is σ = 1965202176. Its totient is φ = 325124280.

The previous prime is 978986873. The next prime is 978987001. The reversal of 978986958 is 859689879.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 978986892 and 978986901.

It is a congruent number.

It is an unprimeable number.

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, 299416 + ... + 302667.

It is an arithmetic number, because the mean of its divisors is an integer number (122825136).

Almost surely, 2^978986958 is an apocalyptic number.

978986958 is an abundant number, since it is smaller than the sum of its proper divisors (986215218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978986958 is a wasteful number, since it uses less digits than its factorization.

978986958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602359.

The product of its digits is 78382080, while the sum is 69.

The square root of 978986958 is about 31288.7672815661. The cubic root of 978986958 is about 992.9460109038.

The spelling of 978986958 in words is "nine hundred seventy-eight million, nine hundred eighty-six thousand, nine hundred fifty-eight".