379435809 has 4 divisors (see below), whose sum is σ = 505914416. Its totient is φ = 252957204.

The previous prime is 379435783. The next prime is 379435811. The reversal of 379435809 is 908534973.

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, and also an emirpimes, since its reverse is a distinct semiprime: 908534973 = 3 ⋅302844991.

It is not a de Polignac number, because 379435809 - 2¹⁵ = 379403041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379435409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63239299 + ... + 63239304.

It is an arithmetic number, because the mean of its divisors is an integer number (126478604).

Almost surely, 2^379435809 is an apocalyptic number.

It is an amenable number.

379435809 is a deficient number, since it is larger than the sum of its proper divisors (126478607).

379435809 is a wasteful number, since it uses less digits than its factorization.

379435809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126478606.

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

The square root of 379435809 is about 19479.1121204227. The cubic root of 379435809 is about 723.9569998016.

The spelling of 379435809 in words is "three hundred seventy-nine million, four hundred thirty-five thousand, eight hundred nine".