3967828 has 6 divisors (see below), whose sum is σ = 6943706. Its totient is φ = 1983912.

The previous prime is 3967819. The next prime is 3967829. The reversal of 3967828 is 8287693.

3967828 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., 3196944 + 770884 = 1788^2 + 878^2 .

It is a super-4 number, since 4×3967828⁴ (a number of 27 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967829) 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, 495975 + ... + 495982.

Almost surely, 2^3967828 is an apocalyptic number.

It is an amenable number.

3967828 is a deficient number, since it is larger than the sum of its proper divisors (2975878).

3967828 is a wasteful number, since it uses less digits than its factorization.

3967828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991961 (or 991959 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 3967828 is about 1991.9407621714. The cubic root of 3967828 is about 158.3133768630.

The spelling of 3967828 in words is "three million, nine hundred sixty-seven thousand, eight hundred twenty-eight".