138399000 has 64 divisors (see below), whose sum is σ = 431814240. Its totient is φ = 36905600.

The previous prime is 138398999. The next prime is 138399013. The reversal of 138399000 is 993831.

138399000 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20067 + ... + 26066.

Almost surely, 2^138399000 is an apocalyptic number.

138399000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138399000 is an abundant number, since it is smaller than the sum of its proper divisors (293415240).

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

138399000 is a wasteful number, since it uses less digits than its factorization.

138399000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46157 (or 46143 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 138399000 is about 11764.3104345304. The cubic root of 138399000 is about 517.2624875677.

The spelling of 138399000 in words is "one hundred thirty-eight million, three hundred ninety-nine thousand".