138119669 has 4 divisors (see below), whose sum is σ = 144124896. Its totient is φ = 132114444.

The previous prime is 138119659. The next prime is 138119687. The reversal of 138119669 is 966911831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 966911831 = 353 ⋅2739127.

It is a cyclic number.

It is not a de Polignac number, because 138119669 - 2²⁰ = 137071093 is a prime.

It is a super-2 number, since 2×138119669² = 38154085929339122, 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 (138119659) 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, 3002579 + ... + 3002624.

It is an arithmetic number, because the mean of its divisors is an integer number (36031224).

Almost surely, 2^138119669 is an apocalyptic number.

It is an amenable number.

138119669 is a deficient number, since it is larger than the sum of its proper divisors (6005227).

138119669 is an equidigital number, since it uses as much as digits as its factorization.

138119669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005226.

The product of its digits is 69984, while the sum is 44.

The square root of 138119669 is about 11752.4324716205. The cubic root of 138119669 is about 516.9142558524.

The spelling of 138119669 in words is "one hundred thirty-eight million, one hundred nineteen thousand, six hundred sixty-nine".