11689429 has 6 divisors (see below), whose sum is σ = 11811254. Its totient is φ = 11568840.

The previous prime is 11689409. The next prime is 11689439. The reversal of 11689429 is 92498611.

It can be written as a sum of positive squares in only one way, i.e., 10304100 + 1385329 = 3210^2 + 1177^2 .

It is not a de Polignac number, because 11689429 - 2⁹ = 11688917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11689391 and 11689400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11689409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10939 + ... + 11959.

Almost surely, 2^11689429 is an apocalyptic number.

It is an amenable number.

11689429 is a deficient number, since it is larger than the sum of its proper divisors (121825).

11689429 is an equidigital number, since it uses as much as digits as its factorization.

11689429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235 (or 1128 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 11689429 is about 3418.9806960555. The cubic root of 11689429 is about 226.9504766243.

The spelling of 11689429 in words is "eleven million, six hundred eighty-nine thousand, four hundred twenty-nine".