2099551400 has 96 divisors (see below), whose sum is σ = 5005929600. Its totient is φ = 818688000.

The previous prime is 2099551397. The next prime is 2099551409. The reversal of 2099551400 is 41559902.

It is not an unprimeable number, because it can be changed into a prime (2099551409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1310600 + ... + 1312200.

It is an arithmetic number, because the mean of its divisors is an integer number (52145100).

Almost surely, 2^2099551400 is an apocalyptic number.

2099551400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2099551400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2502964800).

2099551400 is an abundant number, since it is smaller than the sum of its proper divisors (2906378200).

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

2099551400 is a wasteful number, since it uses less digits than its factorization.

2099551400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779 (or 1770 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 2099551400 is about 45820.8620608561. The cubic root of 2099551400 is about 1280.4879731265.

The spelling of 2099551400 in words is "two billion, ninety-nine million, five hundred fifty-one thousand, four hundred".