11847869 has 4 divisors (see below), whose sum is σ = 12924960. Its totient is φ = 10770780.

The previous prime is 11847853. The next prime is 11847877. The reversal of 11847869 is 96874811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96874811 = 11 ⋅8806801.

It is a cyclic number.

It is not a de Polignac number, because 11847869 - 2⁴ = 11847853 is a prime.

It is a super-2 number, since 2×11847869² = 280743999682322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11847569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538529 + ... + 538550.

It is an arithmetic number, because the mean of its divisors is an integer number (3231240).

Almost surely, 2^11847869 is an apocalyptic number.

It is an amenable number.

11847869 is a deficient number, since it is larger than the sum of its proper divisors (1077091).

11847869 is a wasteful number, since it uses less digits than its factorization.

11847869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077090.

The product of its digits is 96768, while the sum is 44.

The square root of 11847869 is about 3442.0733577308. The cubic root of 11847869 is about 227.9712503505.

The spelling of 11847869 in words is "eleven million, eight hundred forty-seven thousand, eight hundred sixty-nine".