11147491 has 4 divisors (see below), whose sum is σ = 11196400. Its totient is φ = 11098584.

The previous prime is 11147483. The next prime is 11147501. The reversal of 11147491 is 19474111.

11147491 is digitally balanced in base 3, 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 11147491 - 2³ = 11147483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11147791) 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, 24111 + ... + 24568.

It is an arithmetic number, because the mean of its divisors is an integer number (2799100).

Almost surely, 2^11147491 is an apocalyptic number.

11147491 is a deficient number, since it is larger than the sum of its proper divisors (48909).

11147491 is an equidigital number, since it uses as much as digits as its factorization.

11147491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48908.

The product of its digits is 1008, while the sum is 28.

The square root of 11147491 is about 3338.7858571642. The cubic root of 11147491 is about 223.3875903423.

The spelling of 11147491 in words is "eleven million, one hundred forty-seven thousand, four hundred ninety-one".