3935986 has 8 divisors (see below), whose sum is σ = 6063660. Its totient is φ = 1914768.

The previous prime is 3935951. The next prime is 3935989. The reversal of 3935986 is 6895393.

It can be written as a sum of positive squares in 2 ways, for example, as 2873025 + 1062961 = 1695^2 + 1031^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 26521 + ... + 26668.

Almost surely, 2^3935986 is an apocalyptic number.

3935986 is a deficient number, since it is larger than the sum of its proper divisors (2127674).

3935986 is a wasteful number, since it uses less digits than its factorization.

3935986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53228.

The product of its digits is 174960, while the sum is 43.

The square root of 3935986 is about 1983.9319544783. The cubic root of 3935986 is about 157.8887482602. Note that the first 3 decimals are identical.

The spelling of 3935986 in words is "three million, nine hundred thirty-five thousand, nine hundred eighty-six".