2029985 has 4 divisors (see below), whose sum is σ = 2435988. Its totient is φ = 1623984.

The previous prime is 2029981. The next prime is 2029991. The reversal of 2029985 is 5899202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 795664 + 1234321 = 892^2 + 1111^2 .

It is a cyclic number.

It is not a de Polignac number, because 2029985 - 2² = 2029981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2029981) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 202994 + ... + 203003.

It is an arithmetic number, because the mean of its divisors is an integer number (608997).

2^2029985 is an apocalyptic number.

It is an amenable number.

2029985 is a deficient number, since it is larger than the sum of its proper divisors (406003).

2029985 is an equidigital number, since it uses as much as digits as its factorization.

2029985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406002.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 2029985 is about 1424.7754208997. The cubic root of 2029985 is about 126.6186298305.

The spelling of 2029985 in words is "two million, twenty-nine thousand, nine hundred eighty-five".