3999416 has 8 divisors (see below), whose sum is σ = 7498920. Its totient is φ = 1999704.

The previous prime is 3999389. The next prime is 3999421. The reversal of 3999416 is 6149993.

3999416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 249956 + ... + 249971.

It is an arithmetic number, because the mean of its divisors is an integer number (937365).

Almost surely, 2^3999416 is an apocalyptic number.

It is an amenable number.

3999416 is a deficient number, since it is larger than the sum of its proper divisors (3499504).

3999416 is a wasteful number, since it uses less digits than its factorization.

3999416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499933 (or 499929 counting only the distinct ones).

The product of its digits is 52488, while the sum is 41.

The square root of 3999416 is about 1999.8539946706. The cubic root of 3999416 is about 158.7323794690.

The spelling of 3999416 in words is "three million, nine hundred ninety-nine thousand, four hundred sixteen".