1178979 has 8 divisors (see below), whose sum is σ = 1582272. Its totient is φ = 780840.

The previous prime is 1178977. The next prime is 1178981. The reversal of 1178979 is 9798711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1178977) and next prime (1178981).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1178979 - 2¹ = 1178977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1178979.

It is not an unprimeable number, because it can be changed into a prime (1178971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (197784).

2^1178979 is an apocalyptic number.

1178979 is a deficient number, since it is larger than the sum of its proper divisors (403293).

1178979 is a wasteful number, since it uses less digits than its factorization.

1178979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577.

The product of its digits is 31752, while the sum is 42.

The square root of 1178979 is about 1085.8079940763. The cubic root of 1178979 is about 105.6416939640.

The spelling of 1178979 in words is "one million, one hundred seventy-eight thousand, nine hundred seventy-nine".