10009988 has 12 divisors (see below), whose sum is σ = 18121740. Its totient is φ = 4832352.

The previous prime is 10009981. The next prime is 10010023. The reversal of 10009988 is 88990001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1898884 + 8111104 = 1378^2 + 2848^2 .

It is not an unprimeable number, because it can be changed into a prime (10009981) 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, 43031 + ... + 43262.

It is an arithmetic number, because the mean of its divisors is an integer number (1510145).

Almost surely, 2^10009988 is an apocalyptic number.

It is an amenable number.

10009988 is a deficient number, since it is larger than the sum of its proper divisors (8111752).

10009988 is a wasteful number, since it uses less digits than its factorization.

10009988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86326 (or 86324 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 10009988 is about 3163.8565074921. The cubic root of 10009988 is about 215.5151734480.

Adding to 10009988 its reverse (88990001), we get a palindrome (98999989).

The spelling of 10009988 in words is "ten million, nine thousand, nine hundred eighty-eight".