138847351 has 2 divisors, whose sum is σ = 138847352. Its totient is φ = 138847350.

The previous prime is 138847339. The next prime is 138847367. The reversal of 138847351 is 153748831.

It is a weak prime.

It is an emirp because it is prime and its reverse (153748831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138847351 - 2¹⁵ = 138814583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138847391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69423675 + 69423676.

It is an arithmetic number, because the mean of its divisors is an integer number (69423676).

Almost surely, 2^138847351 is an apocalyptic number.

138847351 is a deficient number, since it is larger than the sum of its proper divisors (1).

138847351 is an equidigital number, since it uses as much as digits as its factorization.

138847351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 138847351 is about 11783.3505846173. The cubic root of 138847351 is about 517.8204520266.

The spelling of 138847351 in words is "one hundred thirty-eight million, eight hundred forty-seven thousand, three hundred fifty-one".