3951868 has 12 divisors (see below), whose sum is σ = 6952960. Its totient is φ = 1965312.

The previous prime is 3951863. The next prime is 3951869. The reversal of 3951868 is 8681593.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3951868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3951863) 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 in 3 ways as a sum of consecutive naturals, for example, 1788 + ... + 3331.

Almost surely, 2^3951868 is an apocalyptic number.

It is an amenable number.

3951868 is a deficient number, since it is larger than the sum of its proper divisors (3001092).

3951868 is a wasteful number, since it uses less digits than its factorization.

3951868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5316 (or 5314 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 3951868 is about 1987.9305822890. The cubic root of 3951868 is about 158.1008275943.

The spelling of 3951868 in words is "three million, nine hundred fifty-one thousand, eight hundred sixty-eight".