978179 has 2 divisors, whose sum is σ = 978180. Its totient is φ = 978178.

The previous prime is 978157. The next prime is 978181. The reversal of 978179 is 971879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 978179 - 2⁸ = 977923 is a prime.

It is a Sophie Germain prime.

Together with 978181, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (978149) 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 as a sum of consecutive naturals, namely, 489089 + 489090.

It is an arithmetic number, because the mean of its divisors is an integer number (489090).

2⁹⁷⁸¹⁷⁹ is an apocalyptic number.

978179 is a deficient number, since it is larger than the sum of its proper divisors (1).

978179 is an equidigital number, since it uses as much as digits as its factorization.

978179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 41.

The square root of 978179 is about 989.0293221134. The cubic root of 978179 is about 99.2672776254.

The spelling of 978179 in words is "nine hundred seventy-eight thousand, one hundred seventy-nine".