3938705 has 8 divisors (see below), whose sum is σ = 4879104. Its totient is φ = 3049200.

The previous prime is 3938699. The next prime is 3938707. The reversal of 3938705 is 5078393.

3938705 = 76² + 77² + ... + 230².

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

It is not a de Polignac number, because 3938705 - 2⁸ = 3938449 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 12551 + ... + 12860.

It is an arithmetic number, because the mean of its divisors is an integer number (609888).

Almost surely, 2^3938705 is an apocalyptic number.

It is an amenable number.

3938705 is a deficient number, since it is larger than the sum of its proper divisors (940399).

3938705 is a wasteful number, since it uses less digits than its factorization.

3938705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25447.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 3938705 is about 1984.6170915318. The cubic root of 3938705 is about 157.9250966864.

The spelling of 3938705 in words is "three million, nine hundred thirty-eight thousand, seven hundred five".