11582989 has 16 divisors (see below), whose sum is σ = 13423680. Its totient is φ = 9884160.

The previous prime is 11582981. The next prime is 11582993. The reversal of 11582989 is 98928511.

11582989 is nontrivially palindromic in base 13.

11582989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11582989 - 2³ = 11582981 is a prime.

It is a Duffinian number.

Its product of digits (51840) is a multiple of the sum of its prime divisors (540).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11582981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32637 + ... + 32989.

It is an arithmetic number, because the mean of its divisors is an integer number (838980).

Almost surely, 2^11582989 is an apocalyptic number.

11582989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11582989 is a deficient number, since it is larger than the sum of its proper divisors (1840691).

11582989 is a wasteful number, since it uses less digits than its factorization.

11582989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its digits is 51840, while the sum is 43.

The square root of 11582989 is about 3403.3790561734. The cubic root of 11582989 is about 226.2595303414.

The spelling of 11582989 in words is "eleven million, five hundred eighty-two thousand, nine hundred eighty-nine".