1329945 has 8 divisors (see below), whose sum is σ = 2127936. Its totient is φ = 709296.

The previous prime is 1329941. The next prime is 1329949. The reversal of 1329945 is 5499231.

It is an interprime number because it is at equal distance from previous prime (1329941) and next prime (1329949).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1329945 - 2² = 1329941 is a prime.

It is a d-powerful number, because it can be written as 1 + 3¹⁰ + 2¹⁷ + 9⁴ + 9⁴ + 4¹⁰ + 5⁷ .

It is not an unprimeable number, because it can be changed into a prime (1329941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44317 + ... + 44346.

It is an arithmetic number, because the mean of its divisors is an integer number (265992).

2^1329945 is an apocalyptic number.

1329945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1329945 is a deficient number, since it is larger than the sum of its proper divisors (797991).

1329945 is an equidigital number, since it uses as much as digits as its factorization.

1329945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88671.

The product of its digits is 9720, while the sum is 33.

The square root of 1329945 is about 1153.2324136964. The cubic root of 1329945 is about 109.9709289568.

The spelling of 1329945 in words is "one million, three hundred twenty-nine thousand, nine hundred forty-five".