289122979 has 2 divisors, whose sum is σ = 289122980. Its totient is φ = 289122978.

The previous prime is 289122941. The next prime is 289123033. The reversal of 289122979 is 979221982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289122979 - 2⁹ = 289122467 is a prime.

It is not a weakly prime, because it can be changed into another prime (289122929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144561489 + 144561490.

It is an arithmetic number, because the mean of its divisors is an integer number (144561490).

Almost surely, 2^289122979 is an apocalyptic number.

289122979 is a deficient number, since it is larger than the sum of its proper divisors (1).

289122979 is an equidigital number, since it uses as much as digits as its factorization.

289122979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 49.

The square root of 289122979 is about 17003.6166447024. The cubic root of 289122979 is about 661.2426687438.

The spelling of 289122979 in words is "two hundred eighty-nine million, one hundred twenty-two thousand, nine hundred seventy-nine".