138494 has 4 divisors (see below), whose sum is σ = 207744. Its totient is φ = 69246.

The previous prime is 138493. The next prime is 138497. The reversal of 138494 is 494831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 494831 = 443 ⋅1117.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 138494.

It is not an unprimeable number, because it can be changed into a prime (138493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34622 + ... + 34625.

It is an arithmetic number, because the mean of its divisors is an integer number (51936).

2¹³⁸⁴⁹⁴ is an apocalyptic number.

138494 is a deficient number, since it is larger than the sum of its proper divisors (69250).

138494 is an equidigital number, since it uses as much as digits as its factorization.

138494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69249.

The product of its digits is 3456, while the sum is 29.

The square root of 138494 is about 372.1478200930. The cubic root of 138494 is about 51.7380813801.

The spelling of 138494 in words is "one hundred thirty-eight thousand, four hundred ninety-four".