138348899 has 8 divisors (see below), whose sum is σ = 156833040. Its totient is φ = 120985056.

The previous prime is 138348893. The next prime is 138348901. The reversal of 138348899 is 998843831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138348899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138348899.

It is not an unprimeable number, because it can be changed into a prime (138348893) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 279812 + ... + 280305.

It is an arithmetic number, because the mean of its divisors is an integer number (19604130).

Almost surely, 2^138348899 is an apocalyptic number.

138348899 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

138348899 is a deficient number, since it is larger than the sum of its proper divisors (18484141).

138348899 is a wasteful number, since it uses less digits than its factorization.

138348899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560149.

The product of its digits is 1492992, while the sum is 53.

The square root of 138348899 is about 11762.1808777114. The cubic root of 138348899 is about 517.2000629941.

The spelling of 138348899 in words is "one hundred thirty-eight million, three hundred forty-eight thousand, eight hundred ninety-nine".