1171959 has 4 divisors (see below), whose sum is σ = 1562616. Its totient is φ = 781304.

The previous prime is 1171957. The next prime is 1171967. The reversal of 1171959 is 9591711.

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 1171959 - 2¹ = 1171957 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195324 + ... + 195329.

It is an arithmetic number, because the mean of its divisors is an integer number (390654).

2^1171959 is an apocalyptic number.

1171959 is a deficient number, since it is larger than the sum of its proper divisors (390657).

1171959 is an equidigital number, since it uses as much as digits as its factorization.

1171959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390656.

The product of its digits is 2835, while the sum is 33.

The square root of 1171959 is about 1082.5705519734. The cubic root of 1171959 is about 105.4316021548.

The spelling of 1171959 in words is "one million, one hundred seventy-one thousand, nine hundred fifty-nine".