3935985 has 8 divisors (see below), whose sum is σ = 6297600. Its totient is φ = 2099184.

The previous prime is 3935951. The next prime is 3935989. The reversal of 3935985 is 5895393.

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

It is a de Polignac number, because none of the positive numbers 2^k-3935985 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3935989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131185 + ... + 131214.

It is an arithmetic number, because the mean of its divisors is an integer number (787200).

Almost surely, 2^3935985 is an apocalyptic number.

It is an amenable number.

3935985 is a deficient number, since it is larger than the sum of its proper divisors (2361615).

3935985 is a wasteful number, since it uses less digits than its factorization.

3935985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262407.

The product of its digits is 145800, while the sum is 42.

The square root of 3935985 is about 1983.9317024535. The cubic root of 3935985 is about 157.8887348888. Note that the first 3 decimals are identical.

The spelling of 3935985 in words is "three million, nine hundred thirty-five thousand, nine hundred eighty-five".