3969860 has 48 divisors (see below), whose sum is σ = 9085440. Its totient is φ = 1451520.

The previous prime is 3969853. The next prime is 3969863. The reversal of 3969860 is 689693.

It is not an unprimeable number, because it can be changed into a prime (3969863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11612 + ... + 11948.

It is an arithmetic number, because the mean of its divisors is an integer number (189280).

Almost surely, 2^3969860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3969860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4542720).

3969860 is an abundant number, since it is smaller than the sum of its proper divisors (5115580).

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

3969860 is a wasteful number, since it uses less digits than its factorization.

3969860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 3969860 is about 1992.4507522145. The cubic root of 3969860 is about 158.3403973457.

The spelling of 3969860 in words is "three million, nine hundred sixty-nine thousand, eight hundred sixty".