288290399 has 2 divisors, whose sum is σ = 288290400. Its totient is φ = 288290398.

The previous prime is 288290383. The next prime is 288290407. The reversal of 288290399 is 993092882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 288290399 - 2⁴ = 288290383 is a prime.

It is a super-2 number, since 2×288290399² = 166222708311158402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288290329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144145199 + 144145200.

It is an arithmetic number, because the mean of its divisors is an integer number (144145200).

Almost surely, 2^288290399 is an apocalyptic number.

288290399 is a deficient number, since it is larger than the sum of its proper divisors (1).

288290399 is an equidigital number, since it uses as much as digits as its factorization.

288290399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 288290399 is about 16979.1165553453. The cubic root of 288290399 is about 660.6073373400.

The spelling of 288290399 in words is "two hundred eighty-eight million, two hundred ninety thousand, three hundred ninety-nine".