138935 has 8 divisors (see below), whose sum is σ = 171456. Its totient is φ = 108000.

The previous prime is 138923. The next prime is 138937. The reversal of 138935 is 539831.

138935 = 53² + 54² + ... + 82².

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138935 - 2⁸ = 138679 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 138898 and 138907.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191 + ... + 560.

It is an arithmetic number, because the mean of its divisors is an integer number (21432).

2¹³⁸⁹³⁵ is an apocalyptic number.

138935 is a deficient number, since it is larger than the sum of its proper divisors (32521).

138935 is an equidigital number, since it uses as much as digits as its factorization.

138935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its digits is 3240, while the sum is 29.

The square root of 138935 is about 372.7398556634. The cubic root of 138935 is about 51.7929389162.

The spelling of 138935 in words is "one hundred thirty-eight thousand, nine hundred thirty-five".