289999999489 has 2 divisors, whose sum is σ = 289999999490. Its totient is φ = 289999999488.

The previous prime is 289999999453. The next prime is 289999999493. The reversal of 289999999489 is 984999999982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162483160464 + 127516839025 = 403092^2 + 357095^2 .

It is a cyclic number.

It is not a de Polignac number, because 289999999489 - 2²⁷ = 289865781761 is a prime.

It is a super-2 number, since 2×289999999489² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 289999999397 and 289999999406.

It is not a weakly prime, because it can be changed into another prime (289999969489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144999999744 + 144999999745.

It is an arithmetic number, because the mean of its divisors is an integer number (144999999745).

Almost surely, 2^289999999489 is an apocalyptic number.

It is an amenable number.

289999999489 is a deficient number, since it is larger than the sum of its proper divisors (1).

289999999489 is an equidigital number, since it uses as much as digits as its factorization.

289999999489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22039921152, while the sum is 94.

The spelling of 289999999489 in words is "two hundred eighty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred eighty-nine".