99990208 has 14 divisors (see below), whose sum is σ = 198418196. Its totient is φ = 49995072.

The previous prime is 99990181. The next prime is 99990239. The reversal of 99990208 is 80209999.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781110 + ... + 781237.

Almost surely, 2^99990208 is an apocalyptic number.

It is an amenable number.

99990208 is a deficient number, since it is larger than the sum of its proper divisors (98427988).

99990208 is a wasteful number, since it uses less digits than its factorization.

99990208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562359 (or 1562349 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 99990208 is about 9999.5103880140. The cubic root of 99990208 is about 464.1437327208.

The spelling of 99990208 in words is "ninety-nine million, nine hundred ninety thousand, two hundred eight".