3939663 has 16 divisors (see below), whose sum is σ = 6465536. Its totient is φ = 2077920.

The previous prime is 3939641. The next prime is 3939671. The reversal of 3939663 is 3669393.

It is not a de Polignac number, because 3939663 - 2¹⁰ = 3938639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939673) 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, 6943 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (404096).

Almost surely, 2^3939663 is an apocalyptic number.

3939663 is a deficient number, since it is larger than the sum of its proper divisors (2525873).

3939663 is a wasteful number, since it uses less digits than its factorization.

3939663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14454.

The product of its digits is 78732, while the sum is 39.

The square root of 3939663 is about 1984.8584332390. The cubic root of 3939663 is about 157.9378995390.

The spelling of 3939663 in words is "three million, nine hundred thirty-nine thousand, six hundred sixty-three".