4000286 has 4 divisors (see below), whose sum is σ = 6000432. Its totient is φ = 2000142.

The previous prime is 4000277. The next prime is 4000291. The reversal of 4000286 is 6820004.

4000286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

4000286 is a modest number, since divided by 286 gives 4 as remainder.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1000070 + ... + 1000073.

It is an arithmetic number, because the mean of its divisors is an integer number (1500108).

Almost surely, 2^4000286 is an apocalyptic number.

4000286 is a deficient number, since it is larger than the sum of its proper divisors (2000146).

4000286 is a wasteful number, since it uses less digits than its factorization.

4000286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000145.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4000286 is about 2000.0714987220. The cubic root of 4000286 is about 158.7438884125.

The spelling of 4000286 in words is "four million, two hundred eighty-six", and thus it is an aban number.