138796319 has 4 divisors (see below), whose sum is σ = 138882744. Its totient is φ = 138709896.

The previous prime is 138796309. The next prime is 138796369. The reversal of 138796319 is 913697831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913697831 = 1721 ⋅530911.

It is a cyclic number.

It is not a de Polignac number, because 138796319 - 2¹² = 138792223 is a prime.

It is a super-2 number, since 2×138796319² = 38528836335899522, 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 (138796309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40757 + ... + 44030.

It is an arithmetic number, because the mean of its divisors is an integer number (34720686).

Almost surely, 2^138796319 is an apocalyptic number.

138796319 is a deficient number, since it is larger than the sum of its proper divisors (86425).

138796319 is an equidigital number, since it uses as much as digits as its factorization.

138796319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86424.

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

The square root of 138796319 is about 11781.1849573801. The cubic root of 138796319 is about 517.7570042877.

The spelling of 138796319 in words is "one hundred thirty-eight million, seven hundred ninety-six thousand, three hundred nineteen".