11189427 has 4 divisors (see below), whose sum is σ = 14919240. Its totient is φ = 7459616.

The previous prime is 11189401. The next prime is 11189441. The reversal of 11189427 is 72498111.

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 11189427 - 2¹² = 11185331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11189027) 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, 1864902 + ... + 1864907.

It is an arithmetic number, because the mean of its divisors is an integer number (3729810).

Almost surely, 2^11189427 is an apocalyptic number.

11189427 is a deficient number, since it is larger than the sum of its proper divisors (3729813).

11189427 is an equidigital number, since it uses as much as digits as its factorization.

11189427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3729812.

The product of its digits is 4032, while the sum is 33.

The square root of 11189427 is about 3345.0600891464. The cubic root of 11189427 is about 223.6673620945.

The spelling of 11189427 in words is "eleven million, one hundred eighty-nine thousand, four hundred twenty-seven".