4005212 has 6 divisors (see below), whose sum is σ = 7009128. Its totient is φ = 2002604.

The previous prime is 4005203. The next prime is 4005223. The reversal of 4005212 is 2125004.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500648 + ... + 500655.

It is an arithmetic number, because the mean of its divisors is an integer number (1168188).

Almost surely, 2^4005212 is an apocalyptic number.

It is an amenable number.

4005212 is a deficient number, since it is larger than the sum of its proper divisors (3003916).

4005212 is a wasteful number, since it uses less digits than its factorization.

4005212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001307 (or 1001305 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4005212 is about 2001.3025758241. The cubic root of 4005212 is about 158.8090213919.

The spelling of 4005212 in words is "four million, five thousand, two hundred twelve".