379809 has 14 divisors (see below), whose sum is σ = 570546. Its totient is φ = 252720.

The previous prime is 379787. The next prime is 379811. The reversal of 379809 is 908973.

It can be written as a sum of positive squares in only one way, i.e., 291600 + 88209 = 540^2 + 297^2 .

It is not a de Polignac number, because 379809 - 2⁵ = 379777 is a prime.

379809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (379849) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 469 + ... + 989.

2³⁷⁹⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

379809 is a deficient number, since it is larger than the sum of its proper divisors (190737).

379809 is an frugal number, since it uses more digits than its factorization.

379809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 379809 is about 616.2864593677. The cubic root of 379809 is about 72.4194269368.

The spelling of 379809 in words is "three hundred seventy-nine thousand, eight hundred nine".