138350799 has 24 divisors (see below), whose sum is σ = 217152000. Its totient is φ = 84557520.

The previous prime is 138350783. The next prime is 138350827. The reversal of 138350799 is 997053831.

It is a happy number.

138350799 is a `hidden beast` number, since 138 + 3 + 507 + 9 + 9 = 666.

138350799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138350799 - 2⁴ = 138350783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138350599) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7749 + ... + 18350.

It is an arithmetic number, because the mean of its divisors is an integer number (9048000).

Almost surely, 2^138350799 is an apocalyptic number.

138350799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

138350799 is a deficient number, since it is larger than the sum of its proper divisors (78801201).

138350799 is a wasteful number, since it uses less digits than its factorization.

138350799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26155 (or 26152 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 138350799 is about 11762.2616447688. The cubic root of 138350799 is about 517.2024306208.

The spelling of 138350799 in words is "one hundred thirty-eight million, three hundred fifty thousand, seven hundred ninety-nine".