288391049 has 2 divisors, whose sum is σ = 288391050. Its totient is φ = 288391048.

The previous prime is 288391031. The next prime is 288391121. The reversal of 288391049 is 940193882.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233111824 + 55279225 = 15268^2 + 7435^2 .

It is a cyclic number.

It is not a de Polignac number, because 288391049 - 2⁸ = 288390793 is a prime.

It is not a weakly prime, because it can be changed into another prime (288396049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144195524 + 144195525.

It is an arithmetic number, because the mean of its divisors is an integer number (144195525).

Almost surely, 2^288391049 is an apocalyptic number.

It is an amenable number.

288391049 is a deficient number, since it is larger than the sum of its proper divisors (1).

288391049 is an equidigital number, since it uses as much as digits as its factorization.

288391049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 288391049 is about 16982.0802318208. The cubic root of 288391049 is about 660.6842070431.

The spelling of 288391049 in words is "two hundred eighty-eight million, three hundred ninety-one thousand, forty-nine".