39998799 has 16 divisors (see below), whose sum is σ = 60144640. Its totient is φ = 26266680.

The previous prime is 39998797. The next prime is 39998831. The reversal of 39998799 is 99789993.

39998799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39998799 - 2¹ = 39998797 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 (39998797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9247 + ... + 12864.

It is an arithmetic number, because the mean of its divisors is an integer number (3759040).

Almost surely, 2^39998799 is an apocalyptic number.

39998799 is a deficient number, since it is larger than the sum of its proper divisors (20145841).

39998799 is a wasteful number, since it uses less digits than its factorization.

39998799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22187 (or 22181 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 63.

The square root of 39998799 is about 6324.4603722373. The cubic root of 39998799 is about 341.9917664992.

The spelling of 39998799 in words is "thirty-nine million, nine hundred ninety-eight thousand, seven hundred ninety-nine".