3963840 has 56 divisors (see below), whose sum is σ = 12588240. Its totient is φ = 1056768.

The previous prime is 3963833. The next prime is 3963853. The reversal of 3963840 is 483693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105 + ... + 3024.

It is an arithmetic number, because the mean of its divisors is an integer number (224790).

Almost surely, 2^3963840 is an apocalyptic number.

3963840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3963840 is an abundant number, since it is smaller than the sum of its proper divisors (8624400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3963840 is a wasteful number, since it uses less digits than its factorization.

3963840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149 (or 4139 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 3963840 is about 1990.9394767295. The cubic root of 3963840 is about 158.2603196752.

The spelling of 3963840 in words is "three million, nine hundred sixty-three thousand, eight hundred forty".