320739379 has 4 divisors (see below), whose sum is σ = 320778360. Its totient is φ = 320700400.

The previous prime is 320739373. The next prime is 320739383. The reversal of 320739379 is 973937023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 973937023 = 83 ⋅11734181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320739379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320739373) 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 3 ways as a sum of consecutive naturals, for example, 1789 + ... + 25390.

It is an arithmetic number, because the mean of its divisors is an integer number (80194590).

Almost surely, 2^320739379 is an apocalyptic number.

320739379 is a deficient number, since it is larger than the sum of its proper divisors (38981).

320739379 is a wasteful number, since it uses less digits than its factorization.

320739379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38980.

The product of its (nonzero) digits is 214326, while the sum is 43.

The square root of 320739379 is about 17909.1981674222. The cubic root of 320739379 is about 684.5167735837.

The spelling of 320739379 in words is "three hundred twenty million, seven hundred thirty-nine thousand, three hundred seventy-nine".