379808669 has 4 divisors (see below), whose sum is σ = 379866396. Its totient is φ = 379750944.

The previous prime is 379808659. The next prime is 379808677. The reversal of 379808669 is 966808973.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966808973 = 13 ⋅74369921.

It can be written as a sum of positive squares in 2 ways, for example, as 321484900 + 58323769 = 17930^2 + 7637^2 .

It is a cyclic number.

It is not a de Polignac number, because 379808669 - 2⁸ = 379808413 is a prime.

It is a super-2 number, since 2×379808669² = 288509250095103122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379808609) 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 3 ways as a sum of consecutive naturals, for example, 17504 + ... + 32649.

It is an arithmetic number, because the mean of its divisors is an integer number (94966599).

Almost surely, 2^379808669 is an apocalyptic number.

It is an amenable number.

379808669 is a deficient number, since it is larger than the sum of its proper divisors (57727).

379808669 is an equidigital number, since it uses as much as digits as its factorization.

379808669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57726.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 379808669 is about 19488.6805351209. The cubic root of 379808669 is about 724.1940589914.

The spelling of 379808669 in words is "three hundred seventy-nine million, eight hundred eight thousand, six hundred sixty-nine".