3938868 has 30 divisors (see below), whose sum is σ = 10297826. Its totient is φ = 1312848.

The previous prime is 3938839. The next prime is 3938897. The reversal of 3938868 is 8688393.

It is an interprime number because it is at equal distance from previous prime (3938839) and next prime (3938897).

It can be written as a sum of positive squares in only one way, i.e., 2396304 + 1542564 = 1548^2 + 1242^2 .

It is a super-3 number, since 3×3938868³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5755 + ... + 6402.

Almost surely, 2^3938868 is an apocalyptic number.

It is an amenable number.

3938868 is an abundant number, since it is smaller than the sum of its proper divisors (6358958).

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

3938868 is a wasteful number, since it uses less digits than its factorization.

3938868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12173 (or 12162 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 3938868 is about 1984.6581569631. The cubic root of 3938868 is about 157.9272751889.

It can be divided in two parts, 393 and 8868, that added together give a cube (9261 = 21³).

The spelling of 3938868 in words is "three million, nine hundred thirty-eight thousand, eight hundred sixty-eight".