289508992 has 16 divisors (see below), whose sum is σ = 576756450. Its totient is φ = 144754432.

The previous prime is 289508983. The next prime is 289509019. The reversal of 289508992 is 299805982.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 192210496 + 97298496 = 13864^2 + 9864^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130767 + ... + 1131022.

Almost surely, 2^289508992 is an apocalyptic number.

It is an amenable number.

289508992 is a deficient number, since it is larger than the sum of its proper divisors (287247458).

289508992 is an equidigital number, since it uses as much as digits as its factorization.

289508992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261803 (or 2261791 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The square root of 289508992 is about 17014.9637672256. The cubic root of 289508992 is about 661.5368166480.

The spelling of 289508992 in words is "two hundred eighty-nine million, five hundred eight thousand, nine hundred ninety-two".