99921896 has 8 divisors (see below), whose sum is σ = 187353570. Its totient is φ = 49960944.

The previous prime is 99921883. The next prime is 99921911. The reversal of 99921896 is 69812999.

It can be written as a sum of positive squares in only one way, i.e., 95452900 + 4468996 = 9770^2 + 2114^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6245111 + ... + 6245126.

Almost surely, 2^99921896 is an apocalyptic number.

It is an amenable number.

99921896 is a deficient number, since it is larger than the sum of its proper divisors (87431674).

99921896 is a wasteful number, since it uses less digits than its factorization.

99921896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12490243 (or 12490239 counting only the distinct ones).

The product of its digits is 629856, while the sum is 53.

The square root of 99921896 is about 9996.0940371727. The cubic root of 99921896 is about 464.0380096687.

The spelling of 99921896 in words is "ninety-nine million, nine hundred twenty-one thousand, eight hundred ninety-six".