1166447 has 4 divisors (see below), whose sum is σ = 1170936. Its totient is φ = 1161960.

The previous prime is 1166441. The next prime is 1166453. The reversal of 1166447 is 7446611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7446611 = 43 ⋅173177.

It is an interprime number because it is at equal distance from previous prime (1166441) and next prime (1166453).

It is a cyclic number.

It is not a de Polignac number, because 1166447 - 2⁶ = 1166383 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 (1166441) 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, 1829 + ... + 2382.

It is an arithmetic number, because the mean of its divisors is an integer number (292734).

2^1166447 is an apocalyptic number.

1166447 is a deficient number, since it is larger than the sum of its proper divisors (4489).

1166447 is an equidigital number, since it uses as much as digits as its factorization.

1166447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488.

The product of its digits is 4032, while the sum is 29.

The square root of 1166447 is about 1080.0217590401. The cubic root of 1166447 is about 105.2660524336.

It can be divided in two parts, 11664 and 47, that added together give a palindrome (11711).

The spelling of 1166447 in words is "one million, one hundred sixty-six thousand, four hundred forty-seven".