289929047 has 2 divisors, whose sum is σ = 289929048. Its totient is φ = 289929046.

The previous prime is 289929001. The next prime is 289929049. The reversal of 289929047 is 740929982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 289929047 - 2⁶ = 289928983 is a prime.

Together with 289929049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 289928986 and 289929004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289929049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144964523 + 144964524.

It is an arithmetic number, because the mean of its divisors is an integer number (144964524).

Almost surely, 2^289929047 is an apocalyptic number.

289929047 is a deficient number, since it is larger than the sum of its proper divisors (1).

289929047 is an equidigital number, since it uses as much as digits as its factorization.

289929047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 289929047 is about 17027.3029866741. The cubic root of 289929047 is about 661.8566081668.

The spelling of 289929047 in words is "two hundred eighty-nine million, nine hundred twenty-nine thousand, forty-seven".