3950865 has 12 divisors (see below), whose sum is σ = 6848244. Its totient is φ = 2107104.

The previous prime is 3950827. The next prime is 3950887. The reversal of 3950865 is 5680593.

It can be written as a sum of positive squares in 2 ways, for example, as 1971216 + 1979649 = 1404^2 + 1407^2 .

It is not a de Polignac number, because 3950865 - 2¹¹ = 3948817 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43854 + ... + 43943.

It is an arithmetic number, because the mean of its divisors is an integer number (570687).

Almost surely, 2^3950865 is an apocalyptic number.

It is an amenable number.

3950865 is a deficient number, since it is larger than the sum of its proper divisors (2897379).

3950865 is a wasteful number, since it uses less digits than its factorization.

3950865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87808 (or 87805 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 3950865 is about 1987.6782938896. The cubic root of 3950865 is about 158.0874509205.

The spelling of 3950865 in words is "three million, nine hundred fifty thousand, eight hundred sixty-five".