289348965 has 12 divisors (see below), whose sum is σ = 501538284. Its totient is φ = 154319424.

The previous prime is 289348957. The next prime is 289348973. The reversal of 289348965 is 569843982.

It is an interprime number because it is at equal distance from previous prime (289348957) and next prime (289348973).

It can be written as a sum of positive squares in 2 ways, for example, as 42419169 + 246929796 = 6513^2 + 15714^2 .

It is not a de Polignac number, because 289348965 - 2³ = 289348957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3214944 + ... + 3215033.

It is an arithmetic number, because the mean of its divisors is an integer number (41794857).

Almost surely, 2^289348965 is an apocalyptic number.

It is an amenable number.

289348965 is a deficient number, since it is larger than the sum of its proper divisors (212189319).

289348965 is a wasteful number, since it uses less digits than its factorization.

289348965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429988 (or 6429985 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 289348965 is about 17010.2605800146. The cubic root of 289348965 is about 661.4149053354.

The spelling of 289348965 in words is "two hundred eighty-nine million, three hundred forty-eight thousand, nine hundred sixty-five".