289885901 has 2 divisors, whose sum is σ = 289885902. Its totient is φ = 289885900.

The previous prime is 289885879. The next prime is 289885903. The reversal of 289885901 is 109588982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289884676 + 1225 = 17026^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 289885901 - 2¹⁸ = 289623757 is a prime.

Together with 289885903, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 289885901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289885903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144942950 + 144942951.

It is an arithmetic number, because the mean of its divisors is an integer number (144942951).

Almost surely, 2^289885901 is an apocalyptic number.

It is an amenable number.

289885901 is a deficient number, since it is larger than the sum of its proper divisors (1).

289885901 is an equidigital number, since it uses as much as digits as its factorization.

289885901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 50.

The square root of 289885901 is about 17026.0359743541. The cubic root of 289885901 is about 661.8237749821.

The spelling of 289885901 in words is "two hundred eighty-nine million, eight hundred eighty-five thousand, nine hundred one".