1185979 has 2 divisors, whose sum is σ = 1185980. Its totient is φ = 1185978.

The previous prime is 1185953. The next prime is 1185997. The reversal of 1185979 is 9795811.

It is a happy number.

Together with next prime (1185997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1185979 - 2⁷ = 1185851 is a prime.

It is not a weakly prime, because it can be changed into another prime (1185929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 592989 + 592990.

It is an arithmetic number, because the mean of its divisors is an integer number (592990).

2^1185979 is an apocalyptic number.

1185979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185979 is an equidigital number, since it uses as much as digits as its factorization.

1185979 is an evil number, because the sum of its binary digits is even.

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

The square root of 1185979 is about 1089.0266296101. The cubic root of 1185979 is about 105.8503584462.

The spelling of 1185979 in words is "one million, one hundred eighty-five thousand, nine hundred seventy-nine".