39242689 has 2 divisors, whose sum is σ = 39242690. Its totient is φ = 39242688.

The previous prime is 39242659. The next prime is 39242701. The reversal of 39242689 is 98624293.

39242689 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., 33640000 + 5602689 = 5800^2 + 2367^2 .

It is a cyclic number.

It is not a de Polignac number, because 39242689 - 2⁷ = 39242561 is a prime.

It is not a weakly prime, because it can be changed into another prime (39242629) 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, 19621344 + 19621345.

It is an arithmetic number, because the mean of its divisors is an integer number (19621345).

Almost surely, 2^39242689 is an apocalyptic number.

It is an amenable number.

39242689 is a deficient number, since it is larger than the sum of its proper divisors (1).

39242689 is an equidigital number, since it uses as much as digits as its factorization.

39242689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 39242689 is about 6264.3985345762. The cubic root of 39242689 is about 339.8231173365.

The spelling of 39242689 in words is "thirty-nine million, two hundred forty-two thousand, six hundred eighty-nine".