289894873 has 2 divisors, whose sum is σ = 289894874. Its totient is φ = 289894872.

The previous prime is 289894867. The next prime is 289894883. The reversal of 289894873 is 378498982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276623424 + 13271449 = 16632^2 + 3643^2 .

It is a cyclic number.

It is not a de Polignac number, because 289894873 - 2⁵ = 289894841 is a prime.

It is a super-2 number, since 2×289894873² = 168078074783372258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (289894853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144947436 + 144947437.

It is an arithmetic number, because the mean of its divisors is an integer number (144947437).

Almost surely, 2^289894873 is an apocalyptic number.

It is an amenable number.

289894873 is a deficient number, since it is larger than the sum of its proper divisors (1).

289894873 is an equidigital number, since it uses as much as digits as its factorization.

289894873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 58.

The square root of 289894873 is about 17026.2994511432. The cubic root of 289894873 is about 661.8306027508.

The spelling of 289894873 in words is "two hundred eighty-nine million, eight hundred ninety-four thousand, eight hundred seventy-three".