978995 has 8 divisors (see below), whose sum is σ = 1226016. Its totient is φ = 749056.

The previous prime is 978973. The next prime is 978997. The reversal of 978995 is 599879.

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 978995 - 2⁶ = 978931 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 978995.

It is not an unprimeable number, because it can be changed into a prime (978997) 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, 4142 + ... + 4371.

It is an arithmetic number, because the mean of its divisors is an integer number (153252).

2⁹⁷⁸⁹⁹⁵ is an apocalyptic number.

978995 is a deficient number, since it is larger than the sum of its proper divisors (247021).

978995 is a wasteful number, since it uses less digits than its factorization.

978995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8541.

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

The square root of 978995 is about 989.4417618031. The cubic root of 978995 is about 99.2948729786.

The spelling of 978995 in words is "nine hundred seventy-eight thousand, nine hundred ninety-five".