1447813 has 2 divisors, whose sum is σ = 1447814. Its totient is φ = 1447812.

The previous prime is 1447811. The next prime is 1447843. The reversal of 1447813 is 3187441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804609 + 643204 = 897^2 + 802^2 .

It is an emirp because it is prime and its reverse (3187441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1447813 - 2¹ = 1447811 is a prime.

Together with 1447811, it forms a pair of twin primes.

1447813 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1447811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 723906 + 723907.

It is an arithmetic number, because the mean of its divisors is an integer number (723907).

2^1447813 is an apocalyptic number.

It is an amenable number.

1447813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1447813 is an equidigital number, since it uses as much as digits as its factorization.

1447813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 28.

The square root of 1447813 is about 1203.2510128814. The cubic root of 1447813 is about 113.1281861683.

The spelling of 1447813 in words is "one million, four hundred forty-seven thousand, eight hundred thirteen".