39868625 has 8 divisors (see below), whose sum is σ = 49756200. Its totient is φ = 31894800.

The previous prime is 39868613. The next prime is 39868657. The reversal of 39868625 is 52686893.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2070721 + 37797904 = 1439^2 + 6148^2 .

It is not a de Polignac number, because 39868625 - 2¹² = 39864529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39868625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159350 + ... + 159599.

It is an arithmetic number, because the mean of its divisors is an integer number (6219525).

Almost surely, 2^39868625 is an apocalyptic number.

It is an amenable number.

39868625 is a deficient number, since it is larger than the sum of its proper divisors (9887575).

39868625 is an equidigital number, since it uses as much as digits as its factorization.

39868625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318964 (or 318954 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The square root of 39868625 is about 6314.1606726468. The cubic root of 39868625 is about 341.6203651977.

The spelling of 39868625 in words is "thirty-nine million, eight hundred sixty-eight thousand, six hundred twenty-five".