380659 has 4 divisors (see below), whose sum is σ = 382104. Its totient is φ = 379216.

The previous prime is 380657. The next prime is 380707. The reversal of 380659 is 956083.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 380659 - 2¹ = 380657 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 380659.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380651) 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 3 ways as a sum of consecutive naturals, for example, 202 + ... + 895.

It is an arithmetic number, because the mean of its divisors is an integer number (95526).

2³⁸⁰⁶⁵⁹ is an apocalyptic number.

380659 is a deficient number, since it is larger than the sum of its proper divisors (1445).

380659 is a wasteful number, since it uses less digits than its factorization.

380659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 380659 is about 616.9756883379. The cubic root of 380659 is about 72.4734107808.

Subtracting from 380659 its sum of digits (31), we obtain a triangular number (380628 = T₈₇₂).

The spelling of 380659 in words is "three hundred eighty thousand, six hundred fifty-nine".