3910985 has 8 divisors (see below), whose sum is σ = 5054280. Its totient is φ = 2888064.

The previous prime is 3910981. The next prime is 3910993. The reversal of 3910985 is 5890193.

It can be written as a sum of positive squares in 4 ways, for example, as 802816 + 3108169 = 896^2 + 1763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3910985 - 2² = 3910981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3910981) 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 7 ways as a sum of consecutive naturals, for example, 30020 + ... + 30149.

It is an arithmetic number, because the mean of its divisors is an integer number (631785).

Almost surely, 2^3910985 is an apocalyptic number.

It is an amenable number.

3910985 is a deficient number, since it is larger than the sum of its proper divisors (1143295).

3910985 is a wasteful number, since it uses less digits than its factorization.

3910985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60187.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 3910985 is about 1977.6210456000. The cubic root of 3910985 is about 157.5537399550.

The spelling of 3910985 in words is "three million, nine hundred ten thousand, nine hundred eighty-five".