1180889 has 4 divisors (see below), whose sum is σ = 1232256. Its totient is φ = 1129524.

The previous prime is 1180877. The next prime is 1180891. The reversal of 1180889 is 9880811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1180889 - 2⁴ = 1180873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1180819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25649 + ... + 25694.

It is an arithmetic number, because the mean of its divisors is an integer number (308064).

2^1180889 is an apocalyptic number.

It is an amenable number.

1180889 is a deficient number, since it is larger than the sum of its proper divisors (51367).

1180889 is an equidigital number, since it uses as much as digits as its factorization.

1180889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51366.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 1180889 is about 1086.6871674958. The cubic root of 1180889 is about 105.6987113130.

The spelling of 1180889 in words is "one million, one hundred eighty thousand, eight hundred eighty-nine".