3993606 has 48 divisors (see below), whose sum is σ = 9479808. Its totient is φ = 1209600.

The previous prime is 3993601. The next prime is 3993617. The reversal of 3993606 is 6063993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993601) 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, 9276 + ... + 9696.

It is an arithmetic number, because the mean of its divisors is an integer number (197496).

Almost surely, 2^3993606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3993606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4739904).

3993606 is an abundant number, since it is smaller than the sum of its proper divisors (5486202).

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

3993606 is a wasteful number, since it uses less digits than its factorization.

3993606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 474 counting only the distinct ones).

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

The square root of 3993606 is about 1998.4008606884. The cubic root of 3993606 is about 158.6554780692.

It can be divided in two parts, 399 and 3606, that added together give a triangular number (4005 = T₈₉).

The spelling of 3993606 in words is "three million, nine hundred ninety-three thousand, six hundred six".