138399167 has 8 divisors (see below), whose sum is σ = 140712480. Its totient is φ = 136097280.

The previous prime is 138399133. The next prime is 138399187. The reversal of 138399167 is 761993831.

It is a happy number.

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-138399167 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 (138399187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23567 + ... + 28847.

It is an arithmetic number, because the mean of its divisors is an integer number (17589060).

Almost surely, 2^138399167 is an apocalyptic number.

138399167 is a deficient number, since it is larger than the sum of its proper divisors (2313313).

138399167 is an equidigital number, since it uses as much as digits as its factorization.

138399167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5713.

The product of its digits is 244944, while the sum is 47.

The square root of 138399167 is about 11764.3175322668. The cubic root of 138399167 is about 517.2626956203.

The spelling of 138399167 in words is "one hundred thirty-eight million, three hundred ninety-nine thousand, one hundred sixty-seven".