329961 has 4 divisors (see below), whose sum is σ = 439952. Its totient is φ = 219972.

The previous prime is 329957. The next prime is 329969. The reversal of 329961 is 169923.

329961 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 329961 - 2² = 329957 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 329961.

It is not an unprimeable number, because it can be changed into a prime (329969) 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, 54991 + ... + 54996.

It is an arithmetic number, because the mean of its divisors is an integer number (109988).

2³²⁹⁹⁶¹ is an apocalyptic number.

It is an amenable number.

329961 is a deficient number, since it is larger than the sum of its proper divisors (109991).

329961 is a wasteful number, since it uses less digits than its factorization.

329961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109990.

The product of its digits is 2916, while the sum is 30.

The square root of 329961 is about 574.4223185079. The cubic root of 329961 is about 69.1015099049.

The spelling of 329961 in words is "three hundred twenty-nine thousand, nine hundred sixty-one".