11723289 has 16 divisors (see below), whose sum is σ = 15984000. Its totient is φ = 7641216.

The previous prime is 11723287. The next prime is 11723291. The reversal of 11723289 is 98232711.

It is an interprime number because it is at equal distance from previous prime (11723287) and next prime (11723291).

It is not a de Polignac number, because 11723289 - 2¹ = 11723287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11723281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43447 + ... + 43715.

It is an arithmetic number, because the mean of its divisors is an integer number (999000).

Almost surely, 2^11723289 is an apocalyptic number.

It is an amenable number.

11723289 is a deficient number, since it is larger than the sum of its proper divisors (4260711).

11723289 is a wasteful number, since it uses less digits than its factorization.

11723289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544.

The product of its digits is 6048, while the sum is 33.

The square root of 11723289 is about 3423.9288836073. The cubic root of 11723289 is about 227.1693962221.

The spelling of 11723289 in words is "eleven million, seven hundred twenty-three thousand, two hundred eighty-nine".