328869913 has 4 divisors (see below), whose sum is σ = 348215220. Its totient is φ = 309524608.

The previous prime is 328869907. The next prime is 328869943. The reversal of 328869913 is 319968823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 260757904 + 68112009 = 16148^2 + 8253^2 .

It is a cyclic number.

It is not a de Polignac number, because 328869913 - 2¹⁷ = 328738841 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328869943) 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, 9672628 + ... + 9672661.

It is an arithmetic number, because the mean of its divisors is an integer number (87053805).

Almost surely, 2^328869913 is an apocalyptic number.

It is an amenable number.

328869913 is a deficient number, since it is larger than the sum of its proper divisors (19345307).

328869913 is a wasteful number, since it uses less digits than its factorization.

328869913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19345306.

The product of its digits is 559872, while the sum is 49.

The square root of 328869913 is about 18134.7708284389. The cubic root of 328869913 is about 690.2525946296.

The spelling of 328869913 in words is "three hundred twenty-eight million, eight hundred sixty-nine thousand, nine hundred thirteen".