289284991 has 2 divisors, whose sum is σ = 289284992. Its totient is φ = 289284990.

The previous prime is 289284979. The next prime is 289285033. The reversal of 289284991 is 199482982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289284991 - 2⁵ = 289284959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289282991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144642495 + 144642496.

It is an arithmetic number, because the mean of its divisors is an integer number (144642496).

Almost surely, 2^289284991 is an apocalyptic number.

289284991 is a deficient number, since it is larger than the sum of its proper divisors (1).

289284991 is an equidigital number, since it uses as much as digits as its factorization.

289284991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 52.

The square root of 289284991 is about 17008.3800228005. The cubic root of 289284991 is about 661.3661562687.

The spelling of 289284991 in words is "two hundred eighty-nine million, two hundred eighty-four thousand, nine hundred ninety-one".