99999700 has 36 divisors (see below), whose sum is σ = 217450492. Its totient is φ = 39916800.

The previous prime is 99999677. The next prime is 99999703. The reversal of 99999700 is 799999.

It can be written as a sum of positive squares in 6 ways, for example, as 2937796 + 97061904 = 1714^2 + 9852^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75040 + ... + 76360.

Almost surely, 2^99999700 is an apocalyptic number.

It is an amenable number.

99999700 is an abundant number, since it is smaller than the sum of its proper divisors (117450792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99999700 is a wasteful number, since it uses less digits than its factorization.

99999700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092 (or 2085 counting only the distinct ones).

The product of its (nonzero) digits is 413343, while the sum is 52.

The square root of 99999700 is about 9999.9849999887. The cubic root of 99999700 is about 464.1584192019.

The spelling of 99999700 in words is "ninety-nine million, nine hundred ninety-nine thousand, seven hundred".