20098489 has 2 divisors, whose sum is σ = 20098490. Its totient is φ = 20098488.

The previous prime is 20098453. The next prime is 20098499. The reversal of 20098489 is 98489002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19954089 + 144400 = 4467^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 20098489 - 2⁹ = 20097977 is a prime.

It is not a weakly prime, because it can be changed into another prime (20098439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10049244 + 10049245.

It is an arithmetic number, because the mean of its divisors is an integer number (10049245).

Almost surely, 2^20098489 is an apocalyptic number.

It is an amenable number.

20098489 is a deficient number, since it is larger than the sum of its proper divisors (1).

20098489 is an equidigital number, since it uses as much as digits as its factorization.

20098489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 20098489 is about 4483.1338369493. The cubic root of 20098489 is about 271.8865993906.

It can be divided in two parts, 200 and 98489, that added together give a palindrome (98689).

The spelling of 20098489 in words is "twenty million, ninety-eight thousand, four hundred eighty-nine".