289220471 has 2 divisors, whose sum is σ = 289220472. Its totient is φ = 289220470.

The previous prime is 289220447. The next prime is 289220479. The reversal of 289220471 is 174022982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 289220471 - 2²² = 285026167 is a prime.

It is a super-3 number, since 3×289220471³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289220479) 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, 144610235 + 144610236.

It is an arithmetic number, because the mean of its divisors is an integer number (144610236).

Almost surely, 2^289220471 is an apocalyptic number.

289220471 is a deficient number, since it is larger than the sum of its proper divisors (1).

289220471 is an equidigital number, since it uses as much as digits as its factorization.

289220471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 289220471 is about 17006.4832049428. The cubic root of 289220471 is about 661.3169838626.

The spelling of 289220471 in words is "two hundred eighty-nine million, two hundred twenty thousand, four hundred seventy-one".