11447071 has 4 divisors (see below), whose sum is σ = 11552200. Its totient is φ = 11341944.

The previous prime is 11447053. The next prime is 11447089. The reversal of 11447071 is 17074411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11447053) and next prime (11447089).

It is a cyclic number.

It is not a de Polignac number, because 11447071 - 2⁵ = 11447039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11447771) 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, 52401 + ... + 52618.

It is an arithmetic number, because the mean of its divisors is an integer number (2888050).

Almost surely, 2^11447071 is an apocalyptic number.

11447071 is a deficient number, since it is larger than the sum of its proper divisors (105129).

11447071 is a wasteful number, since it uses less digits than its factorization.

11447071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105128.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 11447071 is about 3383.3520360731. The cubic root of 11447071 is about 225.3710486707.

The spelling of 11447071 in words is "eleven million, four hundred forty-seven thousand, seventy-one".