328079409 has 16 divisors (see below), whose sum is σ = 501029760. Its totient is φ = 187061760.

The previous prime is 328079387. The next prime is 328079443. The reversal of 328079409 is 904970823.

It is not a de Polignac number, because 328079409 - 2²⁰ = 327030833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328079459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7264 + ... + 26625.

It is an arithmetic number, because the mean of its divisors is an integer number (31314360).

Almost surely, 2^328079409 is an apocalyptic number.

It is an amenable number.

328079409 is a deficient number, since it is larger than the sum of its proper divisors (172950351).

328079409 is a wasteful number, since it uses less digits than its factorization.

328079409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34360.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 328079409 is about 18112.9624578643. The cubic root of 328079409 is about 689.6990979523.

The spelling of 328079409 in words is "three hundred twenty-eight million, seventy-nine thousand, four hundred nine".