99900030 has 32 divisors (see below), whose sum is σ = 241380000. Its totient is φ = 26460032.

The previous prime is 99900029. The next prime is 99900077. The reversal of 99900030 is 3000999.

99900030 = 4996² + 4997² + ... + 4999².

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 6705 + ... + 15644.

It is an arithmetic number, because the mean of its divisors is an integer number (7543125).

Almost surely, 2^99900030 is an apocalyptic number.

99900030 is an abundant number, since it is smaller than the sum of its proper divisors (141479970).

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

99900030 is a wasteful number, since it uses less digits than its factorization.

99900030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22508.

The product of its (nonzero) digits is 2187, while the sum is 30.

The square root of 99900030 is about 9995.0002501251. Note that the first 3 decimals coincide. The cubic root of 99900030 is about 464.0041585785.

The spelling of 99900030 in words is "ninety-nine million, nine hundred thousand, thirty".