329289613 has 4 divisors (see below), whose sum is σ = 329326108. Its totient is φ = 329253120.

The previous prime is 329289607. The next prime is 329289629. The reversal of 329289613 is 316982923.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 316982923 = 283 ⋅1120081.

It can be written as a sum of positive squares in 2 ways, for example, as 107785924 + 221503689 = 10382^2 + 14883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-329289613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 329289613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329289713) 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, 6253 + ... + 26413.

It is an arithmetic number, because the mean of its divisors is an integer number (82331527).

Almost surely, 2^329289613 is an apocalyptic number.

It is an amenable number.

329289613 is a deficient number, since it is larger than the sum of its proper divisors (36495).

329289613 is a wasteful number, since it uses less digits than its factorization.

329289613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36494.

The product of its digits is 139968, while the sum is 43.

The square root of 329289613 is about 18146.3388318415. The cubic root of 329289613 is about 690.5461006158.

The spelling of 329289613 in words is "three hundred twenty-nine million, two hundred eighty-nine thousand, six hundred thirteen".