138934 has 4 divisors (see below), whose sum is σ = 208404. Its totient is φ = 69466.

The previous prime is 138923. The next prime is 138937. The reversal of 138934 is 439831.

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

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34732 + ... + 34735.

It is an arithmetic number, because the mean of its divisors is an integer number (52101).

2¹³⁸⁹³⁴ is an apocalyptic number.

138934 is a deficient number, since it is larger than the sum of its proper divisors (69470).

138934 is an equidigital number, since it uses as much as digits as its factorization.

138934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69469.

The product of its digits is 2592, while the sum is 28.

The square root of 138934 is about 372.7385142429. The cubic root of 138934 is about 51.7928146541.

The spelling of 138934 in words is "one hundred thirty-eight thousand, nine hundred thirty-four".