99901836 has 60 divisors (see below), whose sum is σ = 262109232. Its totient is φ = 33180192.

The previous prime is 99901807. The next prime is 99901853. The reversal of 99901836 is 63810999.

It is a junction number, because it is equal to n+sod(n) for n = 99901791 and 99901800.

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 19 ways as a sum of consecutive naturals, for example, 162666 + ... + 163278.

Almost surely, 2^99901836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99901836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131054616).

99901836 is an abundant number, since it is smaller than the sum of its proper divisors (162207396).

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

99901836 is a wasteful number, since it uses less digits than its factorization.

99901836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 99901836 is about 9995.0905948871. The cubic root of 99901836 is about 464.0069546619.

The spelling of 99901836 in words is "ninety-nine million, nine hundred one thousand, eight hundred thirty-six".