138910 has 16 divisors (see below), whose sum is σ = 259200. Its totient is φ = 53536.

The previous prime is 138899. The next prime is 138917. The reversal of 138910 is 19831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51 + ... + 529.

It is an arithmetic number, because the mean of its divisors is an integer number (16200).

2¹³⁸⁹¹⁰ is an apocalyptic number.

138910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138910 is a deficient number, since it is larger than the sum of its proper divisors (120290).

138910 is a wasteful number, since it uses less digits than its factorization.

138910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 138910 is about 372.7063187015. The cubic root of 138910 is about 51.7898321849.

The spelling of 138910 in words is "one hundred thirty-eight thousand, nine hundred ten".