119988809 has 2 divisors, whose sum is σ = 119988810. Its totient is φ = 119988808.

The previous prime is 119988787. The next prime is 119988823. The reversal of 119988809 is 908889911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77933584 + 42055225 = 8828^2 + 6485^2 .

It is a cyclic number.

It is not a de Polignac number, because 119988809 - 2¹² = 119984713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (119988829) 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, 59994404 + 59994405.

It is an arithmetic number, because the mean of its divisors is an integer number (59994405).

Almost surely, 2^119988809 is an apocalyptic number.

It is an amenable number.

119988809 is a deficient number, since it is larger than the sum of its proper divisors (1).

119988809 is an equidigital number, since it uses as much as digits as its factorization.

119988809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 53.

The square root of 119988809 is about 10953.9403412653. The cubic root of 119988809 is about 493.2270814009.

The spelling of 119988809 in words is "one hundred nineteen million, nine hundred eighty-eight thousand, eight hundred nine".