11867291 has 4 divisors (see below), whose sum is σ = 11880192. Its totient is φ = 11854392.

The previous prime is 11867249. The next prime is 11867299. The reversal of 11867291 is 19276811.

11867291 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 11867291 - 2⁶ = 11867227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11867299) 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, 4955 + ... + 6948.

It is an arithmetic number, because the mean of its divisors is an integer number (2970048).

Almost surely, 2^11867291 is an apocalyptic number.

11867291 is a deficient number, since it is larger than the sum of its proper divisors (12901).

11867291 is an equidigital number, since it uses as much as digits as its factorization.

11867291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12900.

The product of its digits is 6048, while the sum is 35.

The square root of 11867291 is about 3444.8934671481. The cubic root of 11867291 is about 228.0957520769.

The spelling of 11867291 in words is "eleven million, eight hundred sixty-seven thousand, two hundred ninety-one".