11988469 has 2 divisors, whose sum is σ = 11988470. Its totient is φ = 11988468.

The previous prime is 11988467. The next prime is 11988517. The reversal of 11988469 is 96488911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 3025 = 3462^2 + 55^2 .

It is a cyclic number.

It is not a de Polignac number, because 11988469 - 2¹ = 11988467 is a prime.

It is a super-2 number, since 2×11988469² = 287446777927922, which contains 22 as substring.

Together with 11988467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11988463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5994234 + 5994235.

It is an arithmetic number, because the mean of its divisors is an integer number (5994235).

Almost surely, 2^11988469 is an apocalyptic number.

It is an amenable number.

11988469 is a deficient number, since it is larger than the sum of its proper divisors (1).

11988469 is an equidigital number, since it uses as much as digits as its factorization.

11988469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 46.

The square root of 11988469 is about 3462.4368586301. The cubic root of 11988469 is about 228.8694933433.

It can be divided in two parts, 119 and 88469, that added together give a palindrome (88588).

The spelling of 11988469 in words is "eleven million, nine hundred eighty-eight thousand, four hundred sixty-nine".