289120939 has 2 divisors, whose sum is σ = 289120940. Its totient is φ = 289120938.

The previous prime is 289120933. The next prime is 289120963. The reversal of 289120939 is 939021982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289120939 - 2¹¹ = 289118891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289120895 and 289120904.

It is not a weakly prime, because it can be changed into another prime (289120933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144560469 + 144560470.

It is an arithmetic number, because the mean of its divisors is an integer number (144560470).

Almost surely, 2^289120939 is an apocalyptic number.

289120939 is a deficient number, since it is larger than the sum of its proper divisors (1).

289120939 is an equidigital number, since it uses as much as digits as its factorization.

289120939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 289120939 is about 17003.5566573585. The cubic root of 289120939 is about 661.2411135368.

The spelling of 289120939 in words is "two hundred eighty-nine million, one hundred twenty thousand, nine hundred thirty-nine".