138793900 has 36 divisors (see below), whose sum is σ = 344210608. Its totient is φ = 47586240.

The previous prime is 138793883. The next prime is 138793931. The reversal of 138793900 is 9397831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98439 + ... + 99838.

Almost surely, 2^138793900 is an apocalyptic number.

138793900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138793900 is an abundant number, since it is smaller than the sum of its proper divisors (205416708).

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

138793900 is a wasteful number, since it uses less digits than its factorization.

138793900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198298 (or 198291 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 138793900 is about 11781.0822932361. The cubic root of 138793900 is about 517.7539963753.

The spelling of 138793900 in words is "one hundred thirty-eight million, seven hundred ninety-three thousand, nine hundred".