39118889 has 2 divisors, whose sum is σ = 39118890. Its totient is φ = 39118888.

The previous prime is 39118867. The next prime is 39118913. The reversal of 39118889 is 98881193.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36808489 + 2310400 = 6067^2 + 1520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39118889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (39118589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19559444 + 19559445.

It is an arithmetic number, because the mean of its divisors is an integer number (19559445).

Almost surely, 2^39118889 is an apocalyptic number.

It is an amenable number.

39118889 is a deficient number, since it is larger than the sum of its proper divisors (1).

39118889 is an equidigital number, since it uses as much as digits as its factorization.

39118889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 47.

The square root of 39118889 is about 6254.5094931577. The cubic root of 39118889 is about 339.4653910899.

The spelling of 39118889 in words is "thirty-nine million, one hundred eighteen thousand, eight hundred eighty-nine".