39648939 has 8 divisors (see below), whose sum is σ = 57671232. Its totient is φ = 24029640.

The previous prime is 39648901. The next prime is 39648971. The reversal of 39648939 is 93984693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39648939 - 2¹¹ = 39646891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39648891 and 39648900.

It is not an unprimeable number, because it can be changed into a prime (39648989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600709 + ... + 600774.

It is an arithmetic number, because the mean of its divisors is an integer number (7208904).

Almost surely, 2^39648939 is an apocalyptic number.

39648939 is a deficient number, since it is larger than the sum of its proper divisors (18022293).

39648939 is a wasteful number, since it uses less digits than its factorization.

39648939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201497.

The product of its digits is 1259712, while the sum is 51.

The square root of 39648939 is about 6296.7403471955. The cubic root of 39648939 is about 340.9917382036.

The spelling of 39648939 in words is "thirty-nine million, six hundred forty-eight thousand, nine hundred thirty-nine".