288479889 has 12 divisors (see below), whose sum is σ = 418119156. Its totient is φ = 191661792.

The previous prime is 288479881. The next prime is 288479899. The reversal of 288479889 is 988974882.

It is a happy number.

288479889 is a `hidden beast` number, since 2 + 88 + 479 + 8 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 274730625 + 13749264 = 16575^2 + 3708^2 .

It is not a de Polignac number, because 288479889 - 2³ = 288479881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (288479881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52062 + ... + 57335.

It is an arithmetic number, because the mean of its divisors is an integer number (34843263).

Almost surely, 2^288479889 is an apocalyptic number.

It is an amenable number.

288479889 is a deficient number, since it is larger than the sum of its proper divisors (129639267).

288479889 is a wasteful number, since it uses less digits than its factorization.

288479889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109696 (or 109693 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 63.

The square root of 288479889 is about 16984.6957288024. The cubic root of 288479889 is about 660.7520422031.

The spelling of 288479889 in words is "two hundred eighty-eight million, four hundred seventy-nine thousand, eight hundred eighty-nine".