4000386 has 16 divisors (see below), whose sum is σ = 8616384. Its totient is φ = 1230864.

The previous prime is 4000379. The next prime is 4000439. The reversal of 4000386 is 6830004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25566 + ... + 25721.

It is an arithmetic number, because the mean of its divisors is an integer number (538524).

Almost surely, 2^4000386 is an apocalyptic number.

4000386 is an abundant number, since it is smaller than the sum of its proper divisors (4615998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4000386 is a wasteful number, since it uses less digits than its factorization.

4000386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51305.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4000386 is about 2000.0964976720. The cubic root of 4000386 is about 158.7452111726.

The spelling of 4000386 in words is "four million, three hundred eighty-six", and thus it is an aban number.