320799999 has 8 divisors (see below), whose sum is σ = 460635952. Its totient is φ = 197415360.

The previous prime is 320799967. The next prime is 320800057. The reversal of 320799999 is 999997023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320799999 - 2⁵ = 320799967 is a prime.

It is a Duffinian number.

320799999 is a modest number, since divided by 99999 gives 3207 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320799959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4112782 + ... + 4112859.

It is an arithmetic number, because the mean of its divisors is an integer number (57579494).

Almost surely, 2^320799999 is an apocalyptic number.

320799999 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

320799999 is a deficient number, since it is larger than the sum of its proper divisors (139835953).

320799999 is a wasteful number, since it uses less digits than its factorization.

320799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8225657.

The product of its (nonzero) digits is 2480058, while the sum is 57.

The square root of 320799999 is about 17910.8905138745. The cubic root of 320799999 is about 684.5598956069.

The spelling of 320799999 in words is "three hundred twenty million, seven hundred ninety-nine thousand, nine hundred ninety-nine".