11129387 has 4 divisors (see below), whose sum is σ = 11263560. Its totient is φ = 10995216.

The previous prime is 11129357. The next prime is 11129423. The reversal of 11129387 is 78392111.

11129387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11129387 - 2⁶ = 11129323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11129357) 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, 66962 + ... + 67127.

It is an arithmetic number, because the mean of its divisors is an integer number (2815890).

Almost surely, 2^11129387 is an apocalyptic number.

11129387 is a deficient number, since it is larger than the sum of its proper divisors (134173).

11129387 is an equidigital number, since it uses as much as digits as its factorization.

11129387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134172.

The product of its digits is 3024, while the sum is 32.

The square root of 11129387 is about 3336.0735903154. The cubic root of 11129387 is about 223.2665944986.

The spelling of 11129387 in words is "eleven million, one hundred twenty-nine thousand, three hundred eighty-seven".