39748813 has 16 divisors (see below), whose sum is σ = 44140096. Its totient is φ = 35562240.

The previous prime is 39748799. The next prime is 39748829. The reversal of 39748813 is 31884793.

It is a happy number.

39748813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 39748813 - 2¹³ = 39740621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 39748813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39748883) 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, 117781 + ... + 118117.

It is an arithmetic number, because the mean of its divisors is an integer number (2758756).

Almost surely, 2^39748813 is an apocalyptic number.

It is an amenable number.

39748813 is a deficient number, since it is larger than the sum of its proper divisors (4391283).

39748813 is a wasteful number, since it uses less digits than its factorization.

39748813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604.

The product of its digits is 145152, while the sum is 43.

The square root of 39748813 is about 6304.6659705333. The cubic root of 39748813 is about 341.2778127224.

The spelling of 39748813 in words is "thirty-nine million, seven hundred forty-eight thousand, eight hundred thirteen".