289270789897 has 2 divisors, whose sum is σ = 289270789898. Its totient is φ = 289270789896.

The previous prime is 289270789891. The next prime is 289270789963. The reversal of 289270789897 is 798987072982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288944951296 + 325838601 = 537536^2 + 18051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289270789897 is a prime.

It is not a weakly prime, because it can be changed into another prime (289270789891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144635394948 + 144635394949.

It is an arithmetic number, because the mean of its divisors is an integer number (144635394949).

Almost surely, 2^289270789897 is an apocalyptic number.

It is an amenable number.

289270789897 is a deficient number, since it is larger than the sum of its proper divisors (1).

289270789897 is an equidigital number, since it uses as much as digits as its factorization.

289270789897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512096256, while the sum is 76.

The spelling of 289270789897 in words is "two hundred eighty-nine billion, two hundred seventy million, seven hundred eighty-nine thousand, eight hundred ninety-seven".