289115093 has 2 divisors, whose sum is σ = 289115094. Its totient is φ = 289115092.

The previous prime is 289115089. The next prime is 289115143. The reversal of 289115093 is 390511982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289068004 + 47089 = 17002^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 289115093 - 2² = 289115089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289115063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144557546 + 144557547.

It is an arithmetic number, because the mean of its divisors is an integer number (144557547).

Almost surely, 2^289115093 is an apocalyptic number.

It is an amenable number.

289115093 is a deficient number, since it is larger than the sum of its proper divisors (1).

289115093 is an equidigital number, since it uses as much as digits as its factorization.

289115093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 289115093 is about 17003.3847512782. The cubic root of 289115093 is about 661.2366567610.

The spelling of 289115093 in words is "two hundred eighty-nine million, one hundred fifteen thousand, ninety-three".