379866109 has 4 divisors (see below), whose sum is σ = 434132704. Its totient is φ = 325599516.

The previous prime is 379866073. The next prime is 379866119. The reversal of 379866109 is 901668973.

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: 901668973 = 71 ⋅12699563.

It is a cyclic number.

It is not a de Polignac number, because 379866109 - 2⁹ = 379865597 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 (379866119) 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, 27133287 + ... + 27133300.

It is an arithmetic number, because the mean of its divisors is an integer number (108533176).

Almost surely, 2^379866109 is an apocalyptic number.

It is an amenable number.

379866109 is a deficient number, since it is larger than the sum of its proper divisors (54266595).

379866109 is an equidigital number, since it uses as much as digits as its factorization.

379866109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54266594.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 379866109 is about 19490.1541553678. The cubic root of 379866109 is about 724.2305647492.

The spelling of 379866109 in words is "three hundred seventy-nine million, eight hundred sixty-six thousand, one hundred nine".