4007866 has 16 divisors (see below), whose sum is σ = 6266880. Its totient is φ = 1920240.

The previous prime is 4007863. The next prime is 4007881. The reversal of 4007866 is 6687004.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (4007863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7620 + ... + 8128.

It is an arithmetic number, because the mean of its divisors is an integer number (391680).

Almost surely, 2^4007866 is an apocalyptic number.

4007866 is a deficient number, since it is larger than the sum of its proper divisors (2259014).

4007866 is a wasteful number, since it uses less digits than its factorization.

4007866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 4007866 is about 2001.9655341689. The cubic root of 4007866 is about 158.8440912027.

4007866 divided by its sum of digits (31) gives a triangular number (129286 = T₅₀₈).

The spelling of 4007866 in words is "four million, seven thousand, eight hundred sixty-six".