289999001 has 2 divisors, whose sum is σ = 289999002. Its totient is φ = 289999000.

The previous prime is 289998991. The next prime is 289999013. The reversal of 289999001 is 100999982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238733401 + 51265600 = 15451^2 + 7160^2 .

It is a cyclic number.

It is not a de Polignac number, because 289999001 - 2¹⁸ = 289736857 is a prime.

It is not a weakly prime, because it can be changed into another prime (289999091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144999500 + 144999501.

It is an arithmetic number, because the mean of its divisors is an integer number (144999501).

Almost surely, 2^289999001 is an apocalyptic number.

It is an amenable number.

289999001 is a deficient number, since it is larger than the sum of its proper divisors (1).

289999001 is an equidigital number, since it uses as much as digits as its factorization.

289999001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 289999001 is about 17029.3570342512. The cubic root of 289999001 is about 661.9098347458.

The spelling of 289999001 in words is "two hundred eighty-nine million, nine hundred ninety-nine thousand, one".