288860389 has 2 divisors, whose sum is σ = 288860390. Its totient is φ = 288860388.

The previous prime is 288860353. The next prime is 288860393. The reversal of 288860389 is 983068882.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211120900 + 77739489 = 14530^2 + 8817^2 .

It is a cyclic number.

It is not a de Polignac number, because 288860389 - 2¹⁷ = 288729317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288860339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144430194 + 144430195.

It is an arithmetic number, because the mean of its divisors is an integer number (144430195).

Almost surely, 2^288860389 is an apocalyptic number.

It is an amenable number.

288860389 is a deficient number, since it is larger than the sum of its proper divisors (1).

288860389 is an equidigital number, since it uses as much as digits as its factorization.

288860389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1327104, while the sum is 52.

The square root of 288860389 is about 16995.8932980882. The cubic root of 288860389 is about 661.0424214228.

The spelling of 288860389 in words is "two hundred eighty-eight million, eight hundred sixty thousand, three hundred eighty-nine".