1156859 has 8 divisors (see below), whose sum is σ = 1270080. Its totient is φ = 1045000.

The previous prime is 1156849. The next prime is 1156873. The reversal of 1156859 is 9586511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1156859 - 2¹² = 1152763 is a prime.

It is a super-3 number, since 3×1156859³ = 4644752140431443337, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156819) 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 7 ways as a sum of consecutive naturals, for example, 2552 + ... + 2970.

It is an arithmetic number, because the mean of its divisors is an integer number (158760).

2^1156859 is an apocalyptic number.

1156859 is a deficient number, since it is larger than the sum of its proper divisors (113221).

1156859 is a wasteful number, since it uses less digits than its factorization.

1156859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681.

The product of its digits is 10800, while the sum is 35.

The square root of 1156859 is about 1075.5738003503. The cubic root of 1156859 is about 104.9768354039.

The spelling of 1156859 in words is "one million, one hundred fifty-six thousand, eight hundred fifty-nine".