380409 has 8 divisors (see below), whose sum is σ = 537120. Its totient is φ = 238656.

The previous prime is 380383. The next prime is 380417. The reversal of 380409 is 904083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 380409 - 2⁵ = 380377 is a prime.

It is a super-2 number, since 2×380409² = 289422014562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (380459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3679 + ... + 3780.

It is an arithmetic number, because the mean of its divisors is an integer number (67140).

2³⁸⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

380409 is a deficient number, since it is larger than the sum of its proper divisors (156711).

380409 is a wasteful number, since it uses less digits than its factorization.

380409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 380409 is about 616.7730538861. The cubic root of 380409 is about 72.4575415289.

The spelling of 380409 in words is "three hundred eighty thousand, four hundred nine".