289412923 has 2 divisors, whose sum is σ = 289412924. Its totient is φ = 289412922.

The previous prime is 289412917. The next prime is 289412939. The reversal of 289412923 is 329214982.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289412923 is a prime.

It is not a weakly prime, because it can be changed into another prime (289412023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144706461 + 144706462.

It is an arithmetic number, because the mean of its divisors is an integer number (144706462).

Almost surely, 2^289412923 is an apocalyptic number.

289412923 is a deficient number, since it is larger than the sum of its proper divisors (1).

289412923 is an equidigital number, since it uses as much as digits as its factorization.

289412923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 289412923 is about 17012.1404590957. The cubic root of 289412923 is about 661.4636350276.

The spelling of 289412923 in words is "two hundred eighty-nine million, four hundred twelve thousand, nine hundred twenty-three".