4005866 has 8 divisors (see below), whose sum is σ = 6065280. Its totient is φ = 1984108.

The previous prime is 4005847. The next prime is 4005889. The reversal of 4005866 is 6685004.

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

It is a pancake number, because a pancake can be divided into 4005866 parts by 2830 straight cuts.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9146 + ... + 9573.

It is an arithmetic number, because the mean of its divisors is an integer number (758160).

Almost surely, 2^4005866 is an apocalyptic number.

4005866 is a deficient number, since it is larger than the sum of its proper divisors (2059414).

4005866 is a wasteful number, since it uses less digits than its factorization.

4005866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18828.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 4005866 is about 2001.4659627383. The cubic root of 4005866 is about 158.8176647502.

The spelling of 4005866 in words is "four million, five thousand, eight hundred sixty-six".