379909 has 2 divisors, whose sum is σ = 379910. Its totient is φ = 379908.

The previous prime is 379903. The next prime is 379913. The reversal of 379909 is 909973.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 330625 + 49284 = 575^2 + 222^2 .

It is an emirp because it is prime and its reverse (909973) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 379909 - 2⁵ = 379877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189954 + 189955.

It is an arithmetic number, because the mean of its divisors is an integer number (189955).

2³⁷⁹⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

379909 is a deficient number, since it is larger than the sum of its proper divisors (1).

379909 is an equidigital number, since it uses as much as digits as its factorization.

379909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15309, while the sum is 37.

The square root of 379909 is about 616.3675851308. The cubic root of 379909 is about 72.4257821550.

The spelling of 379909 in words is "three hundred seventy-nine thousand, nine hundred nine".