11640129 has 4 divisors (see below), whose sum is σ = 15520176. Its totient is φ = 7760084.

The previous prime is 11640127. The next prime is 11640131. The reversal of 11640129 is 92104611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (11640127) and next prime (11640131).

It is a cyclic number.

It is not a de Polignac number, because 11640129 - 2¹ = 11640127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11640099 and 11640108.

It is not an unprimeable number, because it can be changed into a prime (11640127) 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 3 ways as a sum of consecutive naturals, for example, 1940019 + ... + 1940024.

It is an arithmetic number, because the mean of its divisors is an integer number (3880044).

Almost surely, 2^11640129 is an apocalyptic number.

It is an amenable number.

11640129 is a deficient number, since it is larger than the sum of its proper divisors (3880047).

11640129 is an equidigital number, since it uses as much as digits as its factorization.

11640129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880046.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 11640129 is about 3411.7633270788. The cubic root of 11640129 is about 226.6309735704.

The spelling of 11640129 in words is "eleven million, six hundred forty thousand, one hundred twenty-nine".