3963609 has 24 divisors (see below), whose sum is σ = 6493760. Its totient is φ = 2309472.

The previous prime is 3963607. The next prime is 3963623. The reversal of 3963609 is 9063693.

It is not a de Polignac number, because 3963609 - 2¹ = 3963607 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3963607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332 + ... + 3114.

Almost surely, 2^3963609 is an apocalyptic number.

3963609 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3963609 is a deficient number, since it is larger than the sum of its proper divisors (2530151).

3963609 is a wasteful number, since it uses less digits than its factorization.

3963609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1818 counting only the distinct ones).

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

The square root of 3963609 is about 1990.8814630711. The cubic root of 3963609 is about 158.2572453127.

It can be divided in two parts, 396 and 3609, that added together give a triangular number (4005 = T₈₉).

The spelling of 3963609 in words is "three million, nine hundred sixty-three thousand, six hundred nine".