138963319 has 4 divisors (see below), whose sum is σ = 151596360. Its totient is φ = 126330280.

The previous prime is 138963317. The next prime is 138963323. The reversal of 138963319 is 913369831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138963319 - 2¹ = 138963317 is a prime.

It is a super-2 number, since 2×138963319² = 38621608054991522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138963313) 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 in 3 ways as a sum of consecutive naturals, for example, 6316504 + ... + 6316525.

It is an arithmetic number, because the mean of its divisors is an integer number (37899090).

Almost surely, 2^138963319 is an apocalyptic number.

138963319 is a deficient number, since it is larger than the sum of its proper divisors (12633041).

138963319 is a wasteful number, since it uses less digits than its factorization.

138963319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12633040.

The product of its digits is 104976, while the sum is 43.

The square root of 138963319 is about 11788.2703990026. The cubic root of 138963319 is about 517.9645764698.

The spelling of 138963319 in words is "one hundred thirty-eight million, nine hundred sixty-three thousand, three hundred nineteen".