329891345 has 16 divisors (see below), whose sum is σ = 460961280. Its totient is φ = 221941824.

The previous prime is 329891339. The next prime is 329891363. The reversal of 329891345 is 543198923.

It is a cyclic number.

It is not a de Polignac number, because 329891345 - 2⁴ = 329891329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 329891296 and 329891305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87065 + ... + 90774.

It is an arithmetic number, because the mean of its divisors is an integer number (28810080).

Almost surely, 2^329891345 is an apocalyptic number.

329891345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

329891345 is a deficient number, since it is larger than the sum of its proper divisors (131069935).

329891345 is a wasteful number, since it uses less digits than its factorization.

329891345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177904.

The product of its digits is 233280, while the sum is 44.

The square root of 329891345 is about 18162.9112479250. The cubic root of 329891345 is about 690.9664710356.

The spelling of 329891345 in words is "three hundred twenty-nine million, eight hundred ninety-one thousand, three hundred forty-five".