2099729898 has 64 divisors (see below), whose sum is σ = 5338494720. Its totient is φ = 599265216.

The previous prime is 2099729897. The next prime is 2099729923. The reversal of 2099729898 is 8989279902.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (2099729897) 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 31 ways as a sum of consecutive naturals, for example, 419740 + ... + 424712.

It is an arithmetic number, because the mean of its divisors is an integer number (83413980).

Almost surely, 2^2099729898 is an apocalyptic number.

2099729898 is an abundant number, since it is smaller than the sum of its proper divisors (3238764822).

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

2099729898 is a wasteful number, since it uses less digits than its factorization.

2099729898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108 (or 6102 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The square root of 2099729898 is about 45822.8098003603. The cubic root of 2099729898 is about 1280.5242599361.

The spelling of 2099729898 in words is "two billion, ninety-nine million, seven hundred twenty-nine thousand, eight hundred ninety-eight".