3938905 has 8 divisors (see below), whose sum is σ = 4764672. Its totient is φ = 3125808.

The previous prime is 3938903. The next prime is 3938923. The reversal of 3938905 is 5098393.

3938905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3938905 - 2¹ = 3938903 is a prime.

It is a super-3 number, since 3×3938905³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3938903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2467 + ... + 3736.

It is an arithmetic number, because the mean of its divisors is an integer number (595584).

Almost surely, 2^3938905 is an apocalyptic number.

It is an amenable number.

3938905 is a deficient number, since it is larger than the sum of its proper divisors (825767).

3938905 is a wasteful number, since it uses less digits than its factorization.

3938905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 3938905 is about 1984.6674784457. The cubic root of 3938905 is about 157.9277696872.

The spelling of 3938905 in words is "three million, nine hundred thirty-eight thousand, nine hundred five".