320049909 has 24 divisors (see below), whose sum is σ = 470433600. Its totient is φ = 209639232.

The previous prime is 320049907. The next prime is 320049923. The reversal of 320049909 is 909940023.

It is not a de Polignac number, because 320049909 - 2¹ = 320049907 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320049907) 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, 147577 + ... + 149729.

It is an arithmetic number, because the mean of its divisors is an integer number (19601400).

Almost surely, 2^320049909 is an apocalyptic number.

It is an amenable number.

320049909 is a deficient number, since it is larger than the sum of its proper divisors (150383691).

320049909 is a wasteful number, since it uses less digits than its factorization.

320049909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441 (or 2438 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 320049909 is about 17889.9387645682. The cubic root of 320049909 is about 684.0259364844.

The spelling of 320049909 in words is "three hundred twenty million, forty-nine thousand, nine hundred nine".