11989369 has 24 divisors (see below), whose sum is σ = 15205320. Its totient is φ = 9386496.

The previous prime is 11989357. The next prime is 11989379. The reversal of 11989369 is 96398911.

11989369 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4149369 + 7840000 = 2037^2 + 2800^2 .

It is not a de Polignac number, because 11989369 - 2²³ = 3600761 is a prime.

It is a super-2 number, since 2×11989369² = 287489938036322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11989319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30627 + ... + 31015.

It is an arithmetic number, because the mean of its divisors is an integer number (633555).

Almost surely, 2^11989369 is an apocalyptic number.

It is an amenable number.

11989369 is a deficient number, since it is larger than the sum of its proper divisors (3215951).

11989369 is a wasteful number, since it uses less digits than its factorization.

11989369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 450 counting only the distinct ones).

The product of its digits is 104976, while the sum is 46.

The square root of 11989369 is about 3462.5668224599. The cubic root of 11989369 is about 228.8752204407.

The spelling of 11989369 in words is "eleven million, nine hundred eighty-nine thousand, three hundred sixty-nine".