40012166 has 4 divisors (see below), whose sum is σ = 60018252. Its totient is φ = 20006082.

The previous prime is 40012163. The next prime is 40012171. The reversal of 40012166 is 66121004.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10003040 + ... + 10003043.

It is an arithmetic number, because the mean of its divisors is an integer number (15004563).

Almost surely, 2^40012166 is an apocalyptic number.

40012166 is a deficient number, since it is larger than the sum of its proper divisors (20006086).

40012166 is a wasteful number, since it uses less digits than its factorization.

40012166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20006085.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 40012166 is about 6325.5170539648. The cubic root of 40012166 is about 342.0298584330.

The spelling of 40012166 in words is "forty million, twelve thousand, one hundred sixty-six".