138090799 has 8 divisors (see below), whose sum is σ = 172165248. Its totient is φ = 107603160.

The previous prime is 138090793. The next prime is 138090817. The reversal of 138090799 is 997090831.

138090799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 138090799 - 2⁵ = 138090767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138090793) 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, 896617 + ... + 896770.

It is an arithmetic number, because the mean of its divisors is an integer number (21520656).

Almost surely, 2^138090799 is an apocalyptic number.

138090799 is a deficient number, since it is larger than the sum of its proper divisors (34074449).

138090799 is a wasteful number, since it uses less digits than its factorization.

138090799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793405.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 138090799 is about 11751.2041510647. The cubic root of 138090799 is about 516.8782379206.

The spelling of 138090799 in words is "one hundred thirty-eight million, ninety thousand, seven hundred ninety-nine".