39528972189 has 64 divisors (see below), whose sum is σ = 69113651200. Its totient is φ = 21859782336.

The previous prime is 39528972181. The next prime is 39528972209. The reversal of 39528972189 is 98127982593.

39528972189 is a `hidden beast` number, since 3 + 9 + 528 + 9 + 7 + 21 + 89 = 666.

It is not a de Polignac number, because 39528972189 - 2³ = 39528972181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39528972181) 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 in 63 ways as a sum of consecutive naturals, for example, 863532 + ... + 908154.

It is an arithmetic number, because the mean of its divisors is an integer number (1079900800).

Almost surely, 2^39528972189 is an apocalyptic number.

It is an amenable number.

39528972189 is a deficient number, since it is larger than the sum of its proper divisors (29584679011).

39528972189 is a wasteful number, since it uses less digits than its factorization.

39528972189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44791 (or 44785 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 39528972189 in words is "thirty-nine billion, five hundred twenty-eight million, nine hundred seventy-two thousand, one hundred eighty-nine".