3979806 has 8 divisors (see below), whose sum is σ = 7959624. Its totient is φ = 1326600.

The previous prime is 3979771. The next prime is 3979837. The reversal of 3979806 is 6089793.

It is a happy number.

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

3979806 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 331645 + ... + 331656.

It is an arithmetic number, because the mean of its divisors is an integer number (994953).

Almost surely, 2^3979806 is an apocalyptic number.

3979806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3979806 is a wasteful number, since it uses less digits than its factorization.

3979806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663306.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 3979806 is about 1994.9451120269. The cubic root of 3979806 is about 158.4725212508.

The spelling of 3979806 in words is "three million, nine hundred seventy-nine thousand, eight hundred six".