1164889 has 4 divisors (see below), whose sum is σ = 1270800. Its totient is φ = 1058980.

The previous prime is 1164869. The next prime is 1164899. The reversal of 1164889 is 9884611.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-1164889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1164829) 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, 52939 + ... + 52960.

It is an arithmetic number, because the mean of its divisors is an integer number (317700).

2^1164889 is an apocalyptic number.

It is an amenable number.

1164889 is a deficient number, since it is larger than the sum of its proper divisors (105911).

1164889 is a wasteful number, since it uses less digits than its factorization.

1164889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105910.

The product of its digits is 13824, while the sum is 37.

The square root of 1164889 is about 1079.3002362642. The cubic root of 1164889 is about 105.2191642957.

It can be divided in two parts, 116 and 4889, that added together give a palindrome (5005).

The spelling of 1164889 in words is "one million, one hundred sixty-four thousand, eight hundred eighty-nine".