11471869 has 4 divisors (see below), whose sum is σ = 11481660. Its totient is φ = 11462080.

The previous prime is 11471861. The next prime is 11471893. The reversal of 11471869 is 96817411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96817411 = 1321 ⋅73291.

It can be written as a sum of positive squares in 2 ways, for example, as 1923769 + 9548100 = 1387^2 + 3090^2 .

It is a cyclic number.

It is not a de Polignac number, because 11471869 - 2³ = 11471861 is a prime.

It is a super-2 number, since 2×11471869² = 263207556706322, 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 (11471861) 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, 2854 + ... + 5575.

It is an arithmetic number, because the mean of its divisors is an integer number (2870415).

Almost surely, 2^11471869 is an apocalyptic number.

It is an amenable number.

11471869 is a deficient number, since it is larger than the sum of its proper divisors (9791).

11471869 is an equidigital number, since it uses as much as digits as its factorization.

11471869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9790.

The product of its digits is 12096, while the sum is 37.

The square root of 11471869 is about 3387.0147622944. The cubic root of 11471869 is about 225.5336731081.

The spelling of 11471869 in words is "eleven million, four hundred seventy-one thousand, eight hundred sixty-nine".