3909663 has 6 divisors (see below), whose sum is σ = 5647304. Its totient is φ = 2606436.

The previous prime is 3909641. The next prime is 3909667. The reversal of 3909663 is 3669093.

It is not a de Polignac number, because 3909663 - 2¹⁷ = 3778591 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 (3909667) 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 5 ways as a sum of consecutive naturals, for example, 217195 + ... + 217212.

Almost surely, 2^3909663 is an apocalyptic number.

3909663 is a deficient number, since it is larger than the sum of its proper divisors (1737641).

3909663 is a wasteful number, since it uses less digits than its factorization.

3909663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434413 (or 434410 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 3909663 is about 1977.2867773795. The cubic root of 3909663 is about 157.5359857305.

The spelling of 3909663 in words is "three million, nine hundred nine thousand, six hundred sixty-three".