3938706 has 40 divisors (see below), whose sum is σ = 9056124. Its totient is φ = 1278720.

The previous prime is 3938699. The next prime is 3938707. The reversal of 3938706 is 6078393.

It can be written as a sum of positive squares in 2 ways, for example, as 3744225 + 194481 = 1935^2 + 441^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3938707) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6346 + ... + 6938.

Almost surely, 2^3938706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3938706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4528062).

3938706 is an abundant number, since it is smaller than the sum of its proper divisors (5117418).

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

3938706 is a wasteful number, since it uses less digits than its factorization.

3938706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 639 counting only the distinct ones).

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

The square root of 3938706 is about 1984.6173434695. The cubic root of 3938706 is about 157.9251100517.

The spelling of 3938706 in words is "three million, nine hundred thirty-eight thousand, seven hundred six".