329978 has 16 divisors (see below), whose sum is σ = 552096. Its totient is φ = 146640.

The previous prime is 329977. The next prime is 329993. The reversal of 329978 is 879923.

It is not an unprimeable number, because it can be changed into a prime (329977) 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, 1025 + ... + 1307.

It is an arithmetic number, because the mean of its divisors is an integer number (34506).

2³²⁹⁹⁷⁸ is an apocalyptic number.

329978 is a deficient number, since it is larger than the sum of its proper divisors (222118).

329978 is a wasteful number, since it uses less digits than its factorization.

329978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its digits is 27216, while the sum is 38.

The square root of 329978 is about 574.4371157925. The cubic root of 329978 is about 69.1026966164.

Subtracting 329978 from its reverse (879923), we obtain a palindrome (549945).

The spelling of 329978 in words is "three hundred twenty-nine thousand, nine hundred seventy-eight".