1179978 has 8 divisors (see below), whose sum is σ = 2359968. Its totient is φ = 393324.

The previous prime is 1179977. The next prime is 1179979. The reversal of 1179978 is 8799711.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1179977) and next prime (1179979).

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

1179978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1179973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98326 + ... + 98337.

It is an arithmetic number, because the mean of its divisors is an integer number (294996).

2^1179978 is an apocalyptic number.

1179978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1179978 is a wasteful number, since it uses less digits than its factorization.

1179978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196668.

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

The square root of 1179978 is about 1086.2679227520. The cubic root of 1179978 is about 105.6715238020.

The spelling of 1179978 in words is "one million, one hundred seventy-nine thousand, nine hundred seventy-eight".