3945416 has 8 divisors (see below), whose sum is σ = 7397670. Its totient is φ = 1972704.

The previous prime is 3945413. The next prime is 3945427. The reversal of 3945416 is 6145493.

3945416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3880900 + 64516 = 1970^2 + 254^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3945413) by changing a digit.

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, 246581 + ... + 246596.

Almost surely, 2^3945416 is an apocalyptic number.

It is an amenable number.

3945416 is a deficient number, since it is larger than the sum of its proper divisors (3452254).

3945416 is a wasteful number, since it uses less digits than its factorization.

3945416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493183 (or 493179 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 3945416 is about 1986.3071263025. The cubic root of 3945416 is about 158.0147398522.

The spelling of 3945416 in words is "three million, nine hundred forty-five thousand, four hundred sixteen".