99900036 has 18 divisors (see below), whose sum is σ = 252525182. Its totient is φ = 33300000.

The previous prime is 99900029. The next prime is 99900077. The reversal of 99900036 is 63000999.

99900036 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in only one way, i.e., 56340036 + 43560000 = 7506^2 + 6600^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2775001 = 99900036 / (9 + 9 + 9 + 0 + 0 + 0 + 3 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1387465 + ... + 1387536.

Almost surely, 2^99900036 is an apocalyptic number.

It is an amenable number.

99900036 is an abundant number, since it is smaller than the sum of its proper divisors (152625146).

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

99900036 is a wasteful number, since it uses less digits than its factorization.

99900036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775011 (or 2775006 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 99900036 is about 9995.0005502751. Note that the first 3 decimals coincide. The cubic root of 99900036 is about 464.0041678678.

The spelling of 99900036 in words is "ninety-nine million, nine hundred thousand, thirty-six".