138593900 has 36 divisors (see below), whose sum is σ = 311125920. Its totient is φ = 53524800.

The previous prime is 138593867. The next prime is 138593909. The reversal of 138593900 is 9395831.

It is not an unprimeable number, because it can be changed into a prime (138593909) 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 11 ways as a sum of consecutive naturals, for example, 20996 + ... + 26795.

Almost surely, 2^138593900 is an apocalyptic number.

138593900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138593900 is an abundant number, since it is smaller than the sum of its proper divisors (172532020).

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

138593900 is a wasteful number, since it uses less digits than its factorization.

138593900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47834 (or 47827 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 138593900 is about 11772.5910487029. The cubic root of 138593900 is about 517.5051848221.

The spelling of 138593900 in words is "one hundred thirty-eight million, five hundred ninety-three thousand, nine hundred".