39648465 has 12 divisors (see below), whose sum is σ = 68724084. Its totient is φ = 21145824.

The previous prime is 39648463. The next prime is 39648487. The reversal of 39648465 is 56484693.

It can be written as a sum of positive squares in 2 ways, for example, as 4613904 + 35034561 = 2148^2 + 5919^2 .

It is not a de Polignac number, because 39648465 - 2¹ = 39648463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 881077 = 39648465 / (3 + 9 + 6 + 4 + 8 + 4 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 39648465.

It is not an unprimeable number, because it can be changed into a prime (39648461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440494 + ... + 440583.

It is an arithmetic number, because the mean of its divisors is an integer number (5727007).

Almost surely, 2^39648465 is an apocalyptic number.

It is an amenable number.

39648465 is a deficient number, since it is larger than the sum of its proper divisors (29075619).

39648465 is a wasteful number, since it uses less digits than its factorization.

39648465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881088 (or 881085 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 39648465 is about 6296.7027085610. The cubic root of 39648465 is about 340.9903793549.

The spelling of 39648465 in words is "thirty-nine million, six hundred forty-eight thousand, four hundred sixty-five".