138035399 has 8 divisors (see below), whose sum is σ = 145466880. Its totient is φ = 130620600.

The previous prime is 138035341. The next prime is 138035407. The reversal of 138035399 is 993530831.

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

It is a cyclic number.

It is not a de Polignac number, because 138035399 - 2²⁰ = 136986823 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 (138035329) 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 7 ways as a sum of consecutive naturals, for example, 15164 + ... + 22494.

It is an arithmetic number, because the mean of its divisors is an integer number (18183360).

Almost surely, 2^138035399 is an apocalyptic number.

138035399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

138035399 is a deficient number, since it is larger than the sum of its proper divisors (7431481).

138035399 is an equidigital number, since it uses as much as digits as its factorization.

138035399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8341.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 138035399 is about 11748.8467093583. The cubic root of 138035399 is about 516.8091073563.

The spelling of 138035399 in words is "one hundred thirty-eight million, thirty-five thousand, three hundred ninety-nine".