1179985 has 4 divisors (see below), whose sum is σ = 1415988. Its totient is φ = 943984.

The previous prime is 1179979. The next prime is 1179989. The reversal of 1179985 is 5899711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123201 + 1056784 = 351^2 + 1028^2 .

It is a cyclic number.

It is not a de Polignac number, because 1179985 - 2³ = 1179977 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1179989) 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, 117994 + ... + 118003.

It is an arithmetic number, because the mean of its divisors is an integer number (353997).

2^1179985 is an apocalyptic number.

It is an amenable number.

1179985 is a deficient number, since it is larger than the sum of its proper divisors (236003).

1179985 is an equidigital number, since it uses as much as digits as its factorization.

1179985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236002.

The product of its digits is 22680, while the sum is 40.

The square root of 1179985 is about 1086.2711447884. The cubic root of 1179985 is about 105.6717327605.

The spelling of 1179985 in words is "one million, one hundred seventy-nine thousand, nine hundred eighty-five".