40212008 has 8 divisors (see below), whose sum is σ = 75397530. Its totient is φ = 20106000.

The previous prime is 40211959. The next prime is 40212017. The reversal of 40212008 is 80021204.

It can be written as a sum of positive squares in only one way, i.e., 35022724 + 5189284 = 5918^2 + 2278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513243 + ... + 2513258.

Almost surely, 2^40212008 is an apocalyptic number.

It is an amenable number.

40212008 is a deficient number, since it is larger than the sum of its proper divisors (35185522).

40212008 is a wasteful number, since it uses less digits than its factorization.

40212008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5026507 (or 5026503 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 40212008 is about 6341.2938742815. The cubic root of 40212008 is about 342.5983392828.

The spelling of 40212008 in words is "forty million, two hundred twelve thousand, eight".