39663941 has 4 divisors (see below), whose sum is σ = 41997132. Its totient is φ = 37330752.

The previous prime is 39663917. The next prime is 39663947. The reversal of 39663941 is 14936693.

39663941 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14936693 = 17 ⋅878629.

It can be written as a sum of positive squares in 2 ways, for example, as 36844900 + 2819041 = 6070^2 + 1679^2 .

It is a cyclic number.

It is not a de Polignac number, because 39663941 - 2¹⁴ = 39647557 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 (39663947) 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 3 ways as a sum of consecutive naturals, for example, 1166570 + ... + 1166603.

It is an arithmetic number, because the mean of its divisors is an integer number (10499283).

Almost surely, 2^39663941 is an apocalyptic number.

It is an amenable number.

39663941 is a deficient number, since it is larger than the sum of its proper divisors (2333191).

39663941 is a wasteful number, since it uses less digits than its factorization.

39663941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333190.

The product of its digits is 104976, while the sum is 41.

The square root of 39663941 is about 6297.9314858134. The cubic root of 39663941 is about 341.0347398840.

It can be divided in two parts, 39663 and 941, that added together give a palindrome (40604).

The spelling of 39663941 in words is "thirty-nine million, six hundred sixty-three thousand, nine hundred forty-one".