39948528589 has 2 divisors, whose sum is σ = 39948528590. Its totient is φ = 39948528588.

The previous prime is 39948528569. The next prime is 39948528623. The reversal of 39948528589 is 98582584993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37826360100 + 2122168489 = 194490^2 + 46067^2 .

It is a cyclic number.

It is not a de Polignac number, because 39948528589 - 2⁹ = 39948528077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39948528569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19974264294 + 19974264295.

It is an arithmetic number, because the mean of its divisors is an integer number (19974264295).

Almost surely, 2^39948528589 is an apocalyptic number.

It is an amenable number.

39948528589 is a deficient number, since it is larger than the sum of its proper divisors (1).

39948528589 is an equidigital number, since it uses as much as digits as its factorization.

39948528589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 223948800, while the sum is 70.

The spelling of 39948528589 in words is "thirty-nine billion, nine hundred forty-eight million, five hundred twenty-eight thousand, five hundred eighty-nine".