379845309 has 4 divisors (see below), whose sum is σ = 506460416. Its totient is φ = 253230204.

The previous prime is 379845281. The next prime is 379845317. The reversal of 379845309 is 903548973.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 379845309 - 2⁹ = 379844797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379845379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63307549 + ... + 63307554.

It is an arithmetic number, because the mean of its divisors is an integer number (126615104).

Almost surely, 2^379845309 is an apocalyptic number.

It is an amenable number.

379845309 is a deficient number, since it is larger than the sum of its proper divisors (126615107).

379845309 is a wasteful number, since it uses less digits than its factorization.

379845309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126615106.

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 379845309 is about 19489.6205453056. The cubic root of 379845309 is about 724.2173458191.

The spelling of 379845309 in words is "three hundred seventy-nine million, eight hundred forty-five thousand, three hundred nine".