329974981 has 16 divisors (see below), whose sum is σ = 399962880. Its totient is φ = 265754880.

The previous prime is 329974973. The next prime is 329974987. The reversal of 329974981 is 189479923.

It is a happy number.

It is not a de Polignac number, because 329974981 - 2³ = 329974973 is a prime.

It is a super-2 number, since 2×329974981² = 217766976171900722, 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 (329974987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82416 + ... + 86326.

It is an arithmetic number, because the mean of its divisors is an integer number (24997680).

Almost surely, 2^329974981 is an apocalyptic number.

It is an amenable number.

329974981 is a deficient number, since it is larger than the sum of its proper divisors (69987899).

329974981 is a wasteful number, since it uses less digits than its factorization.

329974981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644.

The product of its digits is 979776, while the sum is 52.

The square root of 329974981 is about 18165.2134862214. The cubic root of 329974981 is about 691.0248587336.

The spelling of 329974981 in words is "three hundred twenty-nine million, nine hundred seventy-four thousand, nine hundred eighty-one".