1329443 has 4 divisors (see below), whose sum is σ = 1332888. Its totient is φ = 1326000.

The previous prime is 1329439. The next prime is 1329457. The reversal of 1329443 is 3449231.

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

It is a cyclic number.

It is not a de Polignac number, because 1329443 - 2² = 1329439 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1329143) 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, 1058 + ... + 1943.

It is an arithmetic number, because the mean of its divisors is an integer number (333222).

2^1329443 is an apocalyptic number.

1329443 is a deficient number, since it is larger than the sum of its proper divisors (3445).

1329443 is an equidigital number, since it uses as much as digits as its factorization.

1329443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444.

The product of its digits is 2592, while the sum is 26.

The square root of 1329443 is about 1153.0147440514. The cubic root of 1329443 is about 109.9570907019.

The spelling of 1329443 in words is "one million, three hundred twenty-nine thousand, four hundred forty-three".