328723839 has 12 divisors (see below), whose sum is σ = 492409736. Its totient is φ = 219149064.

The previous prime is 328723793. The next prime is 328723847. The reversal of 328723839 is 938327823.

It is a happy number.

It is not a de Polignac number, because 328723839 - 2⁷ = 328723711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328723794 and 328723803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328723859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 676144 + ... + 676629.

Almost surely, 2^328723839 is an apocalyptic number.

328723839 is a deficient number, since it is larger than the sum of its proper divisors (163685897).

328723839 is an equidigital number, since it uses as much as digits as its factorization.

328723839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352788 (or 1352776 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 328723839 is about 18130.7429246570. The cubic root of 328723839 is about 690.1503831012.

The spelling of 328723839 in words is "three hundred twenty-eight million, seven hundred twenty-three thousand, eight hundred thirty-nine".