289374089 has 2 divisors, whose sum is σ = 289374090. Its totient is φ = 289374088.

The previous prime is 289374083. The next prime is 289374101. The reversal of 289374089 is 980473982.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279558400 + 9815689 = 16720^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 289374089 - 2²⁴ = 272596873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (289374083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144687044 + 144687045.

It is an arithmetic number, because the mean of its divisors is an integer number (144687045).

Almost surely, 2^289374089 is an apocalyptic number.

It is an amenable number.

289374089 is a deficient number, since it is larger than the sum of its proper divisors (1).

289374089 is an equidigital number, since it uses as much as digits as its factorization.

289374089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 289374089 is about 17010.9990594321. Note that the first 3 decimals coincide. The cubic root of 289374089 is about 661.4340482035.

It can be divided in two parts, 2893740 and 89, that multiplied together give a triangular number (257542860 = T₂₂₆₉₅).

The spelling of 289374089 in words is "two hundred eighty-nine million, three hundred seventy-four thousand, eighty-nine".