289399149 has 66 divisors (see below), whose sum is σ = 486265770. Its totient is φ = 171950688.

The previous prime is 289399147. The next prime is 289399153. The reversal of 289399149 is 941993982.

It can be written as a sum of positive squares in 3 ways, for example, as 59049 + 289340100 = 243^2 + 17010^2 .

It is not a de Polignac number, because 289399149 - 2¹ = 289399147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289399095 and 289399104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289399141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 65 ways as a sum of consecutive naturals, for example, 9979267 + ... + 9979295.

Almost surely, 2^289399149 is an apocalyptic number.

289399149 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

289399149 is a deficient number, since it is larger than the sum of its proper divisors (196866621).

289399149 is an frugal number, since it uses more digits than its factorization.

289399149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 45 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 289399149 is about 17011.7356257379. The cubic root of 289399149 is about 661.4531412038.

The spelling of 289399149 in words is "two hundred eighty-nine million, three hundred ninety-nine thousand, one hundred forty-nine".