1186979 has 4 divisors (see below), whose sum is σ = 1191960. Its totient is φ = 1182000.

The previous prime is 1186973. The next prime is 1186981. The reversal of 1186979 is 9796811.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1186979 - 2⁴ = 1186963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1186973) 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, 2114 + ... + 2615.

It is an arithmetic number, because the mean of its divisors is an integer number (297990).

2^1186979 is an apocalyptic number.

1186979 is a deficient number, since it is larger than the sum of its proper divisors (4981).

1186979 is an equidigital number, since it uses as much as digits as its factorization.

1186979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4980.

The product of its digits is 27216, while the sum is 41.

The square root of 1186979 is about 1089.4856584646. The cubic root of 1186979 is about 105.8801005754.

The spelling of 1186979 in words is "one million, one hundred eighty-six thousand, nine hundred seventy-nine".