40006244 has 12 divisors (see below), whose sum is σ = 72269568. Its totient is φ = 19357800.

The previous prime is 40006199. The next prime is 40006247. The reversal of 40006244 is 44260004.

It is not an unprimeable number, because it can be changed into a prime (40006247) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 161192 + ... + 161439.

It is an arithmetic number, because the mean of its divisors is an integer number (6022464).

Almost surely, 2^40006244 is an apocalyptic number.

It is an amenable number.

40006244 is a deficient number, since it is larger than the sum of its proper divisors (32263324).

40006244 is a wasteful number, since it uses less digits than its factorization.

40006244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322666 (or 322664 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40006244 is about 6325.0489326170. The cubic root of 40006244 is about 342.0129835592.

Adding to 40006244 its reverse (44260004), we get a palindrome (84266248).

The spelling of 40006244 in words is "forty million, six thousand, two hundred forty-four".