320940499 has 16 divisors (see below), whose sum is σ = 356751360. Its totient is φ = 286284960.

The previous prime is 320940469. The next prime is 320940511. The reversal of 320940499 is 994049023.

It is a cyclic number.

It is not a de Polignac number, because 320940499 - 2¹¹ = 320938451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320940409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142222 + ... + 144460.

It is an arithmetic number, because the mean of its divisors is an integer number (22296960).

Almost surely, 2^320940499 is an apocalyptic number.

320940499 is a deficient number, since it is larger than the sum of its proper divisors (35810861).

320940499 is a wasteful number, since it uses less digits than its factorization.

320940499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 320940499 is about 17914.8122792286. The cubic root of 320940499 is about 684.6598193680.

The spelling of 320940499 in words is "three hundred twenty million, nine hundred forty thousand, four hundred ninety-nine".