329989866 has 8 divisors (see below), whose sum is σ = 659979744. Its totient is φ = 109996620.

The previous prime is 329989859. The next prime is 329989871. The reversal of 329989866 is 668989923.

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

329989866 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27499150 + ... + 27499161.

It is an arithmetic number, because the mean of its divisors is an integer number (82497468).

Almost surely, 2^329989866 is an apocalyptic number.

329989866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

329989866 is a wasteful number, since it uses less digits than its factorization.

329989866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54998316.

The product of its digits is 10077696, while the sum is 60.

The square root of 329989866 is about 18165.6231932736. The cubic root of 329989866 is about 691.0352491682.

The spelling of 329989866 in words is "three hundred twenty-nine million, nine hundred eighty-nine thousand, eight hundred sixty-six".