3969828 has 18 divisors (see below), whose sum is σ = 10034934. Its totient is φ = 1323264.

The previous prime is 3969827. The next prime is 3969853. The reversal of 3969828 is 8289693.

It can be written as a sum of positive squares in only one way, i.e., 3968064 + 1764 = 1992^2 + 42^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (3969821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55101 + ... + 55172.

Almost surely, 2^3969828 is an apocalyptic number.

It is an amenable number.

3969828 is an abundant number, since it is smaller than the sum of its proper divisors (6065106).

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

3969828 is a wasteful number, since it uses less digits than its factorization.

3969828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110283 (or 110278 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 3969828 is about 1992.4427218869. The cubic root of 3969828 is about 158.3399718977.

The spelling of 3969828 in words is "three million, nine hundred sixty-nine thousand, eight hundred twenty-eight".