2097421289 has 4 divisors (see below), whose sum is σ = 2097672660. Its totient is φ = 2097169920.

The previous prime is 2097421283. The next prime is 2097421309. The reversal of 2097421289 is 9821247902.

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 380562064 + 1716859225 = 19508^2 + 41435^2 .

It is a cyclic number.

It is not a de Polignac number, because 2097421289 - 2¹² = 2097417193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2097421283) 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, 112724 + ... + 130005.

It is an arithmetic number, because the mean of its divisors is an integer number (524418165).

Almost surely, 2^2097421289 is an apocalyptic number.

It is an amenable number.

2097421289 is a deficient number, since it is larger than the sum of its proper divisors (251371).

2097421289 is an equidigital number, since it uses as much as digits as its factorization.

2097421289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251370.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2097421289 is about 45797.6122630864. The cubic root of 2097421289 is about 1280.0547846425.

The spelling of 2097421289 in words is "two billion, ninety-seven million, four hundred twenty-one thousand, two hundred eighty-nine".