288465389 has 2 divisors, whose sum is σ = 288465390. Its totient is φ = 288465388.

The previous prime is 288465347. The next prime is 288465427. The reversal of 288465389 is 983564882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154878025 + 133587364 = 12445^2 + 11558^2 .

It is a cyclic number.

It is not a de Polignac number, because 288465389 - 2²⁰ = 287416813 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 288465389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288465689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144232694 + 144232695.

It is an arithmetic number, because the mean of its divisors is an integer number (144232695).

Almost surely, 2^288465389 is an apocalyptic number.

It is an amenable number.

288465389 is a deficient number, since it is larger than the sum of its proper divisors (1).

288465389 is an equidigital number, since it uses as much as digits as its factorization.

288465389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3317760, while the sum is 53.

The square root of 288465389 is about 16984.2688685736. The cubic root of 288465389 is about 660.7409714544.

The spelling of 288465389 in words is "two hundred eighty-eight million, four hundred sixty-five thousand, three hundred eighty-nine".