288720349 has 2 divisors, whose sum is σ = 288720350. Its totient is φ = 288720348.

The previous prime is 288720343. The next prime is 288720359. The reversal of 288720349 is 943027882.

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., 263900025 + 24820324 = 16245^2 + 4982^2 .

It is a cyclic number.

It is not a de Polignac number, because 288720349 - 2¹¹ = 288718301 is a prime.

It is equal to p_15673894 and since 288720349 and 15673894 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288720343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144360174 + 144360175.

It is an arithmetic number, because the mean of its divisors is an integer number (144360175).

Almost surely, 2^288720349 is an apocalyptic number.

It is an amenable number.

288720349 is a deficient number, since it is larger than the sum of its proper divisors (1).

288720349 is an equidigital number, since it uses as much as digits as its factorization.

288720349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 288720349 is about 16991.7729798865. The cubic root of 288720349 is about 660.9355793311.

The spelling of 288720349 in words is "two hundred eighty-eight million, seven hundred twenty thousand, three hundred forty-nine".