39648799 has 4 divisors (see below), whose sum is σ = 39836920. Its totient is φ = 39460680.

The previous prime is 39648761. The next prime is 39648883. The reversal of 39648799 is 99784693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99784693 = 41 ⋅2433773.

It is a cyclic number.

It is not a de Polignac number, because 39648799 - 2⁷ = 39648671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39648299) 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 3 ways as a sum of consecutive naturals, for example, 93744 + ... + 94165.

It is an arithmetic number, because the mean of its divisors is an integer number (9959230).

Almost surely, 2^39648799 is an apocalyptic number.

39648799 is a deficient number, since it is larger than the sum of its proper divisors (188121).

39648799 is a wasteful number, since it uses less digits than its factorization.

39648799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188120.

The product of its digits is 2939328, while the sum is 55.

The square root of 39648799 is about 6296.7292303227. The cubic root of 39648799 is about 340.9913368571.

The spelling of 39648799 in words is "thirty-nine million, six hundred forty-eight thousand, seven hundred ninety-nine".