138377 has 4 divisors (see below), whose sum is σ = 145680. Its totient is φ = 131076.

The previous prime is 138373. The next prime is 138389. The reversal of 138377 is 773831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138377 - 2² = 138373 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138371) 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, 3623 + ... + 3660.

It is an arithmetic number, because the mean of its divisors is an integer number (36420).

2¹³⁸³⁷⁷ is an apocalyptic number.

It is an amenable number.

138377 is a deficient number, since it is larger than the sum of its proper divisors (7303).

138377 is an equidigital number, since it uses as much as digits as its factorization.

138377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302.

The product of its digits is 3528, while the sum is 29.

The square root of 138377 is about 371.9905912789. The cubic root of 138377 is about 51.7235077982.

It can be divided in two parts, 1383 and 77, that multiplied together give a triangular number (106491 = T₄₆₁).

The spelling of 138377 in words is "one hundred thirty-eight thousand, three hundred seventy-seven".