1135979 has 4 divisors (see below), whose sum is σ = 1223376. Its totient is φ = 1048584.

The previous prime is 1135969. The next prime is 1135997. The reversal of 1135979 is 9795311.

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 1135979 - 2⁴ = 1135963 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1135919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43679 + ... + 43704.

It is an arithmetic number, because the mean of its divisors is an integer number (305844).

2^1135979 is an apocalyptic number.

1135979 is a deficient number, since it is larger than the sum of its proper divisors (87397).

1135979 is an equidigital number, since it uses as much as digits as its factorization.

1135979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87396.

The product of its digits is 8505, while the sum is 35.

The square root of 1135979 is about 1065.8231560630. The cubic root of 1135979 is about 104.3414259687.

The spelling of 1135979 in words is "one million, one hundred thirty-five thousand, nine hundred seventy-nine".