289648249 has 8 divisors (see below), whose sum is σ = 316704960. Its totient is φ = 262712400.

The previous prime is 289648241. The next prime is 289648291. The reversal of 289648249 is 942846982.

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 289648249 - 2³ = 289648241 is a prime.

It is a super-2 number, since 2×289648249² = 167792216297532002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 289648196 and 289648205.

It is not an unprimeable number, because it can be changed into a prime (289648241) 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, 25162 + ... + 34819.

It is an arithmetic number, because the mean of its divisors is an integer number (39588120).

Almost surely, 2^289648249 is an apocalyptic number.

It is an amenable number.

289648249 is a deficient number, since it is larger than the sum of its proper divisors (27056711).

289648249 is a wasteful number, since it uses less digits than its factorization.

289648249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60431.

The product of its digits is 1990656, while the sum is 52.

The square root of 289648249 is about 17019.0554673284. The cubic root of 289648249 is about 661.6428684669.

The spelling of 289648249 in words is "two hundred eighty-nine million, six hundred forty-eight thousand, two hundred forty-nine".