1170289 has 4 divisors (see below), whose sum is σ = 1187824. Its totient is φ = 1152756.

The previous prime is 1170277. The next prime is 1170311. The reversal of 1170289 is 9820711.

1170289 is nontrivially palindromic in base 2.

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: 9820711 = 1303 ⋅7537.

It is a cyclic number.

It is not a de Polignac number, because 1170289 - 2¹¹ = 1168241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1170209) 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, 8667 + ... + 8800.

It is an arithmetic number, because the mean of its divisors is an integer number (296956).

2^1170289 is an apocalyptic number.

It is an amenable number.

1170289 is a deficient number, since it is larger than the sum of its proper divisors (17535).

1170289 is an equidigital number, since it uses as much as digits as its factorization.

1170289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17534.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1170289 is about 1081.7989646880. The cubic root of 1170289 is about 105.3814995848.

The spelling of 1170289 in words is "one million, one hundred seventy thousand, two hundred eighty-nine".