20099908 has 6 divisors (see below), whose sum is σ = 35174846. Its totient is φ = 10049952.

The previous prime is 20099903. The next prime is 20099939. The reversal of 20099908 is 80999002.

It can be written as a sum of positive squares in only one way, i.e., 19998784 + 101124 = 4472^2 + 318^2 .

It is not an unprimeable number, because it can be changed into a prime (20099903) 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 as a sum of consecutive naturals, namely, 2512485 + ... + 2512492.

Almost surely, 2^20099908 is an apocalyptic number.

It is an amenable number.

20099908 is a deficient number, since it is larger than the sum of its proper divisors (15074938).

20099908 is a wasteful number, since it uses less digits than its factorization.

20099908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024981 (or 5024979 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 20099908 is about 4483.2920939863. The cubic root of 20099908 is about 271.8929978485.

The spelling of 20099908 in words is "twenty million, ninety-nine thousand, nine hundred eight".