2002727921 has 4 divisors (see below), whose sum is σ = 2089803072. Its totient is φ = 1915652772.

The previous prime is 2002727873. The next prime is 2002727933. The reversal of 2002727921 is 1297272002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002727921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002727941) 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, 43537541 + ... + 43537586.

It is an arithmetic number, because the mean of its divisors is an integer number (522450768).

Almost surely, 2^2002727921 is an apocalyptic number.

It is an amenable number.

2002727921 is a deficient number, since it is larger than the sum of its proper divisors (87075151).

2002727921 is an equidigital number, since it uses as much as digits as its factorization.

2002727921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87075150.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 2002727921 is about 44751.8482411621. The cubic root of 2002727921 is about 1260.4936171691.

Adding to 2002727921 its reverse (1297272002), we get a palindrome (3299999923).

The spelling of 2002727921 in words is "two billion, two million, seven hundred twenty-seven thousand, nine hundred twenty-one".