288390863 has 2 divisors, whose sum is σ = 288390864. Its totient is φ = 288390862.

The previous prime is 288390821. The next prime is 288390871. The reversal of 288390863 is 368093882.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 288390863 - 2¹⁴ = 288374479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288390163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144195431 + 144195432.

It is an arithmetic number, because the mean of its divisors is an integer number (144195432).

Almost surely, 2^288390863 is an apocalyptic number.

288390863 is a deficient number, since it is larger than the sum of its proper divisors (1).

288390863 is an equidigital number, since it uses as much as digits as its factorization.

288390863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 288390863 is about 16982.0747554591. The cubic root of 288390863 is about 660.6840650053.

The spelling of 288390863 in words is "two hundred eighty-eight million, three hundred ninety thousand, eight hundred sixty-three".