119990881609 has 3 divisors (see below), whose sum is σ = 119991228007. Its totient is φ = 119990535212.

The previous prime is 119990881597. The next prime is 119990881639. The reversal of 119990881609 is 906188099911.

The square root of 119990881609 is 346397.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 906188099911 = 2971 ⋅305011141.

It can be written as a sum of positive squares in only one way, i.e., 108060125625 + 11930755984 = 328725^2 + 109228^2 .

It is not a de Polignac number, because 119990881609 - 2⁹ = 119990881097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (119990881639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 173199 + ... + 519595.

Almost surely, 2^119990881609 is an apocalyptic number.

119990881609 is the 346397-th square number.

119990881609 is the 173199-th centered octagonal number.

It is an amenable number.

119990881609 is a deficient number, since it is larger than the sum of its proper divisors (346398).

119990881609 is an frugal number, since it uses more digits than its factorization.

119990881609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692794 (or 346397 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 61.

The spelling of 119990881609 in words is "one hundred nineteen billion, nine hundred ninety million, eight hundred eighty-one thousand, six hundred nine".