11119391 has 4 divisors (see below), whose sum is σ = 11139912. Its totient is φ = 11098872.

The previous prime is 11119363. The next prime is 11119403. The reversal of 11119391 is 19391111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11119391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11119391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11119321) 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, 9425 + ... + 10538.

It is an arithmetic number, because the mean of its divisors is an integer number (2784978).

Almost surely, 2^11119391 is an apocalyptic number.

11119391 is a deficient number, since it is larger than the sum of its proper divisors (20521).

11119391 is an equidigital number, since it uses as much as digits as its factorization.

11119391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20520.

The product of its digits is 243, while the sum is 26.

The square root of 11119391 is about 3334.5750853744. The cubic root of 11119391 is about 223.1997312360.

It can be divided in two parts, 1111 and 9391, that multiplied together give a palindrome (10433401).

The spelling of 11119391 in words is "eleven million, one hundred nineteen thousand, three hundred ninety-one".