329965381 has 8 divisors (see below), whose sum is σ = 347498720. Its totient is φ = 312448752.

The previous prime is 329965379. The next prime is 329965477. The reversal of 329965381 is 183569923.

It is a happy number.

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 329965381 - 2¹ = 329965379 is a prime.

It is a super-2 number, since 2×329965381² = 217754305316950322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329965331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75646 + ... + 79888.

It is an arithmetic number, because the mean of its divisors is an integer number (43437340).

Almost surely, 2^329965381 is an apocalyptic number.

It is an amenable number.

329965381 is a deficient number, since it is larger than the sum of its proper divisors (17533339).

329965381 is a wasteful number, since it uses less digits than its factorization.

329965381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355.

The product of its digits is 349920, while the sum is 46.

The square root of 329965381 is about 18164.9492429789. The cubic root of 329965381 is about 691.0181573135.

The spelling of 329965381 in words is "three hundred twenty-nine million, nine hundred sixty-five thousand, three hundred eighty-one".