2100799 has 4 divisors (see below), whose sum is σ = 2152080. Its totient is φ = 2049520.

The previous prime is 2100793. The next prime is 2100803. The reversal of 2100799 is 9970012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100799 - 2¹⁹ = 1576511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25579 + ... + 25660.

It is an arithmetic number, because the mean of its divisors is an integer number (538020).

2^2100799 is an apocalyptic number.

2100799 is a deficient number, since it is larger than the sum of its proper divisors (51281).

2100799 is an equidigital number, since it uses as much as digits as its factorization.

2100799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51280.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 2100799 is about 1449.4133295924. The cubic root of 2100799 is about 128.0741554355.

The spelling of 2100799 in words is "two million, one hundred thousand, seven hundred ninety-nine".