3938806 has 4 divisors (see below), whose sum is σ = 5908212. Its totient is φ = 1969402.

The previous prime is 3938791. The next prime is 3938821. The reversal of 3938806 is 6088393.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3938791) and next prime (3938821).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984700 + ... + 984703.

It is an arithmetic number, because the mean of its divisors is an integer number (1477053).

Almost surely, 2^3938806 is an apocalyptic number.

3938806 is a deficient number, since it is larger than the sum of its proper divisors (1969406).

3938806 is a wasteful number, since it uses less digits than its factorization.

3938806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969405.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 3938806 is about 1984.6425370832. The cubic root of 3938806 is about 157.9264465631.

The spelling of 3938806 in words is "three million, nine hundred thirty-eight thousand, eight hundred six".