289418369 has 2 divisors, whose sum is σ = 289418370. Its totient is φ = 289418368.

The previous prime is 289418357. The next prime is 289418377. The reversal of 289418369 is 963814982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272910400 + 16507969 = 16520^2 + 4063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289418369 is a prime.

It is a super-2 number, since 2×289418369² = 167525984629240322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (289418309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144709184 + 144709185.

It is an arithmetic number, because the mean of its divisors is an integer number (144709185).

Almost surely, 2^289418369 is an apocalyptic number.

It is an amenable number.

289418369 is a deficient number, since it is larger than the sum of its proper divisors (1).

289418369 is an equidigital number, since it uses as much as digits as its factorization.

289418369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 50.

The square root of 289418369 is about 17012.3005205057. The cubic root of 289418369 is about 661.4677840112.

The spelling of 289418369 in words is "two hundred eighty-nine million, four hundred eighteen thousand, three hundred sixty-nine".