2099965 has 8 divisors (see below), whose sum is σ = 2880000. Its totient is φ = 1439952.

The previous prime is 2099963. The next prime is 2100001. The reversal of 2099965 is 5699902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2099965 - 2¹ = 2099963 is a prime.

2099965 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2099963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29965 + ... + 30034.

It is an arithmetic number, because the mean of its divisors is an integer number (360000).

2^2099965 is an apocalyptic number.

It is an amenable number.

2099965 is a deficient number, since it is larger than the sum of its proper divisors (780035).

2099965 is an equidigital number, since it uses as much as digits as its factorization.

2099965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60011.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 2099965 is about 1449.1255984213. The cubic root of 2099965 is about 128.0572050619.

The spelling of 2099965 in words is "two million, ninety-nine thousand, nine hundred sixty-five".