99960020 has 12 divisors (see below), whose sum is σ = 209916084. Its totient is φ = 39984000.

The previous prime is 99960019. The next prime is 99960031. The reversal of 99960020 is 2006999.

It can be written as a sum of positive squares in 2 ways, for example, as 36024004 + 63936016 = 6002^2 + 7996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2498981 + ... + 2499020.

It is an arithmetic number, because the mean of its divisors is an integer number (17493007).

Almost surely, 2^99960020 is an apocalyptic number.

It is an amenable number.

99960020 is an abundant number, since it is smaller than the sum of its proper divisors (109956064).

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

99960020 is a wasteful number, since it uses less digits than its factorization.

99960020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4998010 (or 4998008 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 99960020 is about 9998.0008001600. Note that the first 3 decimals coincide. The cubic root of 99960020 is about 464.0970182088.

The spelling of 99960020 in words is "ninety-nine million, nine hundred sixty thousand, twenty".