11947259 has 4 divisors (see below), whose sum is σ = 12201504. Its totient is φ = 11693016.

The previous prime is 11947213. The next prime is 11947283. The reversal of 11947259 is 95274911.

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-11947259 is a prime.

It is a super-2 number, since 2×11947259² = 285473995226162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11940259) 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, 127052 + ... + 127145.

It is an arithmetic number, because the mean of its divisors is an integer number (3050376).

Almost surely, 2^11947259 is an apocalyptic number.

11947259 is a deficient number, since it is larger than the sum of its proper divisors (254245).

11947259 is an equidigital number, since it uses as much as digits as its factorization.

11947259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254244.

The product of its digits is 22680, while the sum is 38.

The square root of 11947259 is about 3456.4807246678. The cubic root of 11947259 is about 228.6069482932.

The spelling of 11947259 in words is "eleven million, nine hundred forty-seven thousand, two hundred fifty-nine".