11471471 has 4 divisors (see below), whose sum is σ = 12514344. Its totient is φ = 10428600.

The previous prime is 11471423. The next prime is 11471483. The reversal of 11471471 is 17417411.

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 11471471 - 2¹⁸ = 11209327 is a prime.

It is a super-3 number, since 3×11471471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11471471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11471491) 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, 521420 + ... + 521441.

It is an arithmetic number, because the mean of its divisors is an integer number (3128586).

Almost surely, 2^11471471 is an apocalyptic number.

11471471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11471471 is a deficient number, since it is larger than the sum of its proper divisors (1042873).

11471471 is a wasteful number, since it uses less digits than its factorization.

11471471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042872.

The product of its digits is 784, while the sum is 26.

The square root of 11471471 is about 3386.9560079812. The cubic root of 11471471 is about 225.5310648891.

Adding to 11471471 its reverse (17417411), we get a palindrome (28888882).

The spelling of 11471471 in words is "eleven million, four hundred seventy-one thousand, four hundred seventy-one".