39521875 has 12 divisors (see below), whose sum is σ = 49403088. Its totient is φ = 31615000.

The previous prime is 39521857. The next prime is 39521903. The reversal of 39521875 is 57812593.

39521875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39521875 - 2¹⁷ = 39390803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 3199 + ... + 9448.

It is an arithmetic number, because the mean of its divisors is an integer number (4116924).

Almost surely, 2^39521875 is an apocalyptic number.

39521875 is a deficient number, since it is larger than the sum of its proper divisors (9881213).

39521875 is an frugal number, since it uses more digits than its factorization.

39521875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12672 (or 12652 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 39521875 is about 6286.6425856732. The cubic root of 39521875 is about 340.6270866522.

The spelling of 39521875 in words is "thirty-nine million, five hundred twenty-one thousand, eight hundred seventy-five".