1447999 has 12 divisors (see below), whose sum is σ = 1744200. Its totient is φ = 1197168.

The previous prime is 1447987. The next prime is 1448003. The reversal of 1447999 is 9997441.

It is not a de Polignac number, because 1447999 - 2⁹ = 1447487 is a prime.

It is a super-2 number, since 2×1447999² = 4193402208002, which contains 22 as substring.

It is a Duffinian number.

1447999 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 912 + ... + 1930.

It is an arithmetic number, because the mean of its divisors is an integer number (145350).

2^1447999 is an apocalyptic number.

1447999 is a deficient number, since it is larger than the sum of its proper divisors (296201).

1447999 is a wasteful number, since it uses less digits than its factorization.

1447999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 1055 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 1447999 is about 1203.3283010052. The cubic root of 1447999 is about 113.1330304729.

The spelling of 1447999 in words is "one million, four hundred forty-seven thousand, nine hundred ninety-nine".