3994861 has 8 divisors (see below), whose sum is σ = 4317824. Its totient is φ = 3674160.

The previous prime is 3994849. The next prime is 3994891. The reversal of 3994861 is 1684993.

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 3994861 - 2⁷ = 3994733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994841) 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, 6016 + ... + 6646.

It is an arithmetic number, because the mean of its divisors is an integer number (539728).

Almost surely, 2^3994861 is an apocalyptic number.

It is an amenable number.

3994861 is a deficient number, since it is larger than the sum of its proper divisors (322963).

3994861 is a wasteful number, since it uses less digits than its factorization.

3994861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131.

The product of its digits is 46656, while the sum is 40.

The square root of 3994861 is about 1998.7148370891. The cubic root of 3994861 is about 158.6720956133.

The spelling of 3994861 in words is "three million, nine hundred ninety-four thousand, eight hundred sixty-one".