138239214 has 16 divisors (see below), whose sum is σ = 276601728. Its totient is φ = 46059192.

The previous prime is 138239209. The next prime is 138239219. The reversal of 138239214 is 412932831.

138239214 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138239209) and next prime (138239219).

It is a super-2 number, since 2×138239214² = 38220160574675592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138239219) 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, 16359 + ... + 23325.

It is an arithmetic number, because the mean of its divisors is an integer number (17287608).

Almost surely, 2^138239214 is an apocalyptic number.

138239214 is an abundant number, since it is smaller than the sum of its proper divisors (138362514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138239214 is a wasteful number, since it uses less digits than its factorization.

138239214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10279.

The product of its digits is 10368, while the sum is 33.

The square root of 138239214 is about 11757.5173399830. The cubic root of 138239214 is about 517.0633456372.

The spelling of 138239214 in words is "one hundred thirty-eight million, two hundred thirty-nine thousand, two hundred fourteen".