288874991 has 2 divisors, whose sum is σ = 288874992. Its totient is φ = 288874990.

The previous prime is 288874987. The next prime is 288875011. The reversal of 288874991 is 199478882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 288874991 - 2² = 288874987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (288874951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144437495 + 144437496.

It is an arithmetic number, because the mean of its divisors is an integer number (144437496).

Almost surely, 2^288874991 is an apocalyptic number.

288874991 is a deficient number, since it is larger than the sum of its proper divisors (1).

288874991 is an equidigital number, since it uses as much as digits as its factorization.

288874991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 56.

The square root of 288874991 is about 16996.3228670204. The cubic root of 288874991 is about 661.0535598818.

The spelling of 288874991 in words is "two hundred eighty-eight million, eight hundred seventy-four thousand, nine hundred ninety-one".