289879451689 has 8 divisors (see below), whose sum is σ = 301017489192. Its totient is φ = 278935119360.

The previous prime is 289879451663. The next prime is 289879451713. The reversal of 289879451689 is 986154978982.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4438224400 + 285441227289 = 66620^2 + 534267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 289879451689 - 2⁵ = 289879451657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289879451189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48423244 + ... + 48429229.

It is an arithmetic number, because the mean of its divisors is an integer number (37627186149).

Almost surely, 2^289879451689 is an apocalyptic number.

It is an amenable number.

289879451689 is a deficient number, since it is larger than the sum of its proper divisors (11138037503).

289879451689 is an equidigital number, since it uses as much as digits as its factorization.

289879451689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96852587.

The product of its digits is 627056640, while the sum is 76.

The spelling of 289879451689 in words is "two hundred eighty-nine billion, eight hundred seventy-nine million, four hundred fifty-one thousand, six hundred eighty-nine".