1161447 has 12 divisors (see below), whose sum is σ = 1801656. Its totient is φ = 663600.

The previous prime is 1161443. The next prime is 1161449. The reversal of 1161447 is 7441611.

It is not a de Polignac number, because 1161447 - 2² = 1161443 is a prime.

1161447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3804 + ... + 4097.

It is an arithmetic number, because the mean of its divisors is an integer number (150138).

2^1161447 is an apocalyptic number.

1161447 is a deficient number, since it is larger than the sum of its proper divisors (640209).

1161447 is an equidigital number, since it uses as much as digits as its factorization.

1161447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7918 (or 7911 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 1161447 is about 1077.7045049549. The cubic root of 1161447 is about 105.1154286161.

The spelling of 1161447 in words is "one million, one hundred sixty-one thousand, four hundred forty-seven".