329981373 has 24 divisors (see below), whose sum is σ = 505667448. Its totient is φ = 206641152.

The previous prime is 329981363. The next prime is 329981381. The reversal of 329981373 is 373189923.

It can be written as a sum of positive squares in 4 ways, for example, as 26594649 + 303386724 = 5157^2 + 17418^2 .

It is not a de Polignac number, because 329981373 - 2¹⁰ = 329980349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329981363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88911 + ... + 92547.

It is an arithmetic number, because the mean of its divisors is an integer number (21069477).

Almost surely, 2^329981373 is an apocalyptic number.

It is an amenable number.

329981373 is a deficient number, since it is larger than the sum of its proper divisors (175686075).

329981373 is a wasteful number, since it uses less digits than its factorization.

329981373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253 (or 4250 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 329981373 is about 18165.3894260486. The cubic root of 329981373 is about 691.0293206905.

The spelling of 329981373 in words is "three hundred twenty-nine million, nine hundred eighty-one thousand, three hundred seventy-three".