39120989 has 2 divisors, whose sum is σ = 39120990. Its totient is φ = 39120988.

The previous prime is 39120959. The next prime is 39120997. The reversal of 39120989 is 98902193.

39120989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31922500 + 7198489 = 5650^2 + 2683^2 .

It is a cyclic number.

It is not a de Polignac number, because 39120989 - 2⁸ = 39120733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39120959) 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, 19560494 + 19560495.

It is an arithmetic number, because the mean of its divisors is an integer number (19560495).

Almost surely, 2^39120989 is an apocalyptic number.

It is an amenable number.

39120989 is a deficient number, since it is larger than the sum of its proper divisors (1).

39120989 is an equidigital number, since it uses as much as digits as its factorization.

39120989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 39120989 is about 6254.6773697770. The cubic root of 39120989 is about 339.4714654322.

The spelling of 39120989 in words is "thirty-nine million, one hundred twenty thousand, nine hundred eighty-nine".