1168889 has 4 divisors (see below), whose sum is σ = 1183056. Its totient is φ = 1154724.

The previous prime is 1168879. The next prime is 1168897. The reversal of 1168889 is 9888611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9888611 = 17 ⋅581683.

It is a cyclic number.

It is not a de Polignac number, because 1168889 - 2¹⁶ = 1103353 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1168819) 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, 6959 + ... + 7124.

It is an arithmetic number, because the mean of its divisors is an integer number (295764).

2^1168889 is an apocalyptic number.

It is an amenable number.

1168889 is a deficient number, since it is larger than the sum of its proper divisors (14167).

1168889 is an equidigital number, since it uses as much as digits as its factorization.

1168889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14166.

The product of its digits is 27648, while the sum is 41.

The square root of 1168889 is about 1081.1517007340. The cubic root of 1168889 is about 105.3394606897.

The spelling of 1168889 in words is "one million, one hundred sixty-eight thousand, eight hundred eighty-nine".