11866129 has 4 divisors (see below), whose sum is σ = 12944880. Its totient is φ = 10787380.

The previous prime is 11866109. The next prime is 11866157. The reversal of 11866129 is 92166811.

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 a cyclic number.

It is not a de Polignac number, because 11866129 - 2⁹ = 11865617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11866094 and 11866103.

It is not an unprimeable number, because it can be changed into a prime (11866109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539359 + ... + 539380.

It is an arithmetic number, because the mean of its divisors is an integer number (3236220).

Almost surely, 2^11866129 is an apocalyptic number.

It is an amenable number.

11866129 is a deficient number, since it is larger than the sum of its proper divisors (1078751).

11866129 is a wasteful number, since it uses less digits than its factorization.

11866129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078750.

The product of its digits is 5184, while the sum is 34.

The square root of 11866129 is about 3444.7248075862. The cubic root of 11866129 is about 228.0883070777.

The spelling of 11866129 in words is "eleven million, eight hundred sixty-six thousand, one hundred twenty-nine".