139379 has 4 divisors (see below), whose sum is σ = 143184. Its totient is φ = 135576.

The previous prime is 139369. The next prime is 139387. The reversal of 139379 is 973931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 973931 = 7 ⋅139133.

It is a cyclic number.

It is not a de Polignac number, because 139379 - 2⁸ = 139123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1847 + ... + 1920.

It is an arithmetic number, because the mean of its divisors is an integer number (35796).

2¹³⁹³⁷⁹ is an apocalyptic number.

139379 is a deficient number, since it is larger than the sum of its proper divisors (3805).

139379 is an equidigital number, since it uses as much as digits as its factorization.

139379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its digits is 5103, while the sum is 32.

The square root of 139379 is about 373.3349702345. The cubic root of 139379 is about 51.8480524868.

The spelling of 139379 in words is "one hundred thirty-nine thousand, three hundred seventy-nine".