380139 has 4 divisors (see below), whose sum is σ = 506856. Its totient is φ = 253424.

The previous prime is 380131. The next prime is 380141. The reversal of 380139 is 931083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931083 = 3 ⋅310361.

It is a cyclic number.

It is not a de Polignac number, because 380139 - 2³ = 380131 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (380131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63354 + ... + 63359.

It is an arithmetic number, because the mean of its divisors is an integer number (126714).

2³⁸⁰¹³⁹ is an apocalyptic number.

380139 is a deficient number, since it is larger than the sum of its proper divisors (126717).

380139 is a wasteful number, since it uses less digits than its factorization.

380139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126716.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 380139 is about 616.5541338763. The cubic root of 380139 is about 72.4403949257.

The spelling of 380139 in words is "three hundred eighty thousand, one hundred thirty-nine".