40006984 has 16 divisors (see below), whose sum is σ = 79425900. Its totient is φ = 18826752.

The previous prime is 40006969. The next prime is 40006991. The reversal of 40006984 is 48960004.

It can be written as a sum of positive squares in 2 ways, for example, as 37822500 + 2184484 = 6150^2 + 1478^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 146949 + ... + 147220.

Almost surely, 2^40006984 is an apocalyptic number.

It is an amenable number.

40006984 is a deficient number, since it is larger than the sum of its proper divisors (39418916).

40006984 is a wasteful number, since it uses less digits than its factorization.

40006984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294192 (or 294188 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40006984 is about 6325.1074299177. The cubic root of 40006984 is about 342.0150922971.

Adding to 40006984 its reverse (48960004), we get a palindrome (88966988).

The spelling of 40006984 in words is "forty million, six thousand, nine hundred eighty-four".