1329345409 has 8 divisors (see below), whose sum is σ = 1519473600. Its totient is φ = 1139272656.

The previous prime is 1329345389. The next prime is 1329345443. The reversal of 1329345409 is 9045439231.

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

It is a cyclic number.

It is not a de Polignac number, because 1329345409 - 2⁵ = 1329345377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1329345499) 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, 79242 + ... + 94540.

It is an arithmetic number, because the mean of its divisors is an integer number (189934200).

Almost surely, 2^1329345409 is an apocalyptic number.

It is an amenable number.

1329345409 is a deficient number, since it is larger than the sum of its proper divisors (190128191).

1329345409 is a wasteful number, since it uses less digits than its factorization.

1329345409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27719.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 1329345409 is about 36460.1893714226. The cubic root of 1329345409 is about 1099.5440008012.

The spelling of 1329345409 in words is "one billion, three hundred twenty-nine million, three hundred forty-five thousand, four hundred nine".