138864343 has 2 divisors, whose sum is σ = 138864344. Its totient is φ = 138864342.

The previous prime is 138864307. The next prime is 138864361. The reversal of 138864343 is 343468831.

It is a strong prime.

It is an emirp because it is prime and its reverse (343468831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138864343 - 2¹⁷ = 138733271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138864296 and 138864305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138864043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69432171 + 69432172.

It is an arithmetic number, because the mean of its divisors is an integer number (69432172).

Almost surely, 2^138864343 is an apocalyptic number.

138864343 is a deficient number, since it is larger than the sum of its proper divisors (1).

138864343 is an equidigital number, since it uses as much as digits as its factorization.

138864343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The square root of 138864343 is about 11784.0715798912. The cubic root of 138864343 is about 517.8415746147.

The spelling of 138864343 in words is "one hundred thirty-eight million, eight hundred sixty-four thousand, three hundred forty-three".