39868825 has 12 divisors (see below), whose sum is σ = 52345980. Its totient is φ = 30018560.

The previous prime is 39868811. The next prime is 39868847. The reversal of 39868825 is 52886893.

It can be written as a sum of positive squares in 6 ways, for example, as 3640464 + 36228361 = 1908^2 + 6019^2 .

It is not a de Polignac number, because 39868825 - 2¹¹ = 39866777 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46480 + ... + 47329.

It is an arithmetic number, because the mean of its divisors is an integer number (4362165).

Almost surely, 2^39868825 is an apocalyptic number.

It is an amenable number.

39868825 is a deficient number, since it is larger than the sum of its proper divisors (12477155).

39868825 is a wasteful number, since it uses less digits than its factorization.

39868825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93836 (or 93831 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 39868825 is about 6314.1765100447. The cubic root of 39868825 is about 341.6209364402.

The spelling of 39868825 in words is "thirty-nine million, eight hundred sixty-eight thousand, eight hundred twenty-five".