289776897 has 12 divisors (see below), whose sum is σ = 421075200. Its totient is φ = 192026808.

The previous prime is 289776881. The next prime is 289776913. The reversal of 289776897 is 798677982.

It is an interprime number because it is at equal distance from previous prime (289776881) and next prime (289776913).

It is not a de Polignac number, because 289776897 - 2⁴ = 289776881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289771897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94897 + ... + 97902.

It is an arithmetic number, because the mean of its divisors is an integer number (35089600).

Almost surely, 2^289776897 is an apocalyptic number.

It is an amenable number.

289776897 is a deficient number, since it is larger than the sum of its proper divisors (131298303).

289776897 is a wasteful number, since it uses less digits than its factorization.

289776897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192972 (or 192969 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 63.

The square root of 289776897 is about 17022.8345759453. The cubic root of 289776897 is about 661.7408107506.

The spelling of 289776897 in words is "two hundred eighty-nine million, seven hundred seventy-six thousand, eight hundred ninety-seven".