289448927 has 2 divisors, whose sum is σ = 289448928. Its totient is φ = 289448926.

The previous prime is 289448923. The next prime is 289448947. The reversal of 289448927 is 729844982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289448927 - 2² = 289448923 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289448921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144724463 + 144724464.

It is an arithmetic number, because the mean of its divisors is an integer number (144724464).

Almost surely, 2^289448927 is an apocalyptic number.

289448927 is a deficient number, since it is larger than the sum of its proper divisors (1).

289448927 is an equidigital number, since it uses as much as digits as its factorization.

289448927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 53.

The square root of 289448927 is about 17013.1986116662. The cubic root of 289448927 is about 661.4910633689.

The spelling of 289448927 in words is "two hundred eighty-nine million, four hundred forty-eight thousand, nine hundred twenty-seven".