3963870 has 64 divisors (see below), whose sum is σ = 10808640. Its totient is φ = 1033344.

The previous prime is 3963857. The next prime is 3963887. The reversal of 3963870 is 783693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14172 + ... + 14448.

It is an arithmetic number, because the mean of its divisors is an integer number (168885).

Almost surely, 2^3963870 is an apocalyptic number.

3963870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3963870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5404320).

3963870 is an abundant number, since it is smaller than the sum of its proper divisors (6844770).

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

3963870 is a wasteful number, since it uses less digits than its factorization.

3963870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3963870 is about 1990.9470108468. The cubic root of 3963870 is about 158.2607189343.

The spelling of 3963870 in words is "three million, nine hundred sixty-three thousand, eight hundred seventy".