4020386 has 8 divisors (see below), whose sum is σ = 6238620. Its totient is φ = 1940848.

The previous prime is 4020361. The next prime is 4020407. The reversal of 4020386 is 6830204.

It is a happy number.

4020386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4020025 + 361 = 2005^2 + 19^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34601 + ... + 34716.

Almost surely, 2^4020386 is an apocalyptic number.

4020386 is a deficient number, since it is larger than the sum of its proper divisors (2218234).

4020386 is a wasteful number, since it uses less digits than its factorization.

4020386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69348.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 4020386 is about 2005.0900229167. The cubic root of 4020386 is about 159.0093213422.

The spelling of 4020386 in words is "four million, twenty thousand, three hundred eighty-six".