1156959 has 6 divisors (see below), whose sum is σ = 1671176. Its totient is φ = 771300.

The previous prime is 1156949. The next prime is 1156963. The reversal of 1156959 is 9596511.

It is not a de Polignac number, because 1156959 - 2⁵ = 1156927 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156949) 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 5 ways as a sum of consecutive naturals, for example, 64267 + ... + 64284.

2^1156959 is an apocalyptic number.

1156959 is a deficient number, since it is larger than the sum of its proper divisors (514217).

1156959 is a wasteful number, since it uses less digits than its factorization.

1156959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128557 (or 128554 counting only the distinct ones).

The product of its digits is 12150, while the sum is 36.

The square root of 1156959 is about 1075.6202861605. The cubic root of 1156959 is about 104.9798600828.

It can be divided in two parts, 11569 and 59, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 1156959 in words is "one million, one hundred fifty-six thousand, nine hundred fifty-nine".