3959668 has 6 divisors (see below), whose sum is σ = 6929426. Its totient is φ = 1979832.

The previous prime is 3959663. The next prime is 3959677. The reversal of 3959668 is 8669593.

It can be written as a sum of positive squares in only one way, i.e., 3849444 + 110224 = 1962^2 + 332^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3959663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494955 + ... + 494962.

Almost surely, 2^3959668 is an apocalyptic number.

It is an amenable number.

3959668 is a deficient number, since it is larger than the sum of its proper divisors (2969758).

3959668 is a wasteful number, since it uses less digits than its factorization.

3959668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989921 (or 989919 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The square root of 3959668 is about 1989.8914543261. The cubic root of 3959668 is about 158.2047764113.

The spelling of 3959668 in words is "three million, nine hundred fifty-nine thousand, six hundred sixty-eight".