380779 has 12 divisors (see below), whose sum is σ = 467400. Its totient is φ = 308448.

The previous prime is 380777. The next prime is 380797. The reversal of 380779 is 977083.

380779 = 81² + 82² + ... + 118².

It is not a de Polignac number, because 380779 - 2¹ = 380777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (380777) 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 11 ways as a sum of consecutive naturals, for example, 727 + ... + 1135.

It is an arithmetic number, because the mean of its divisors is an integer number (38950).

2³⁸⁰⁷⁷⁹ is an apocalyptic number.

380779 is a deficient number, since it is larger than the sum of its proper divisors (86621).

380779 is a wasteful number, since it uses less digits than its factorization.

380779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 380779 is about 617.0729292393. The cubic root of 380779 is about 72.4810255537.

The spelling of 380779 in words is "three hundred eighty thousand, seven hundred seventy-nine".