289997135 has 16 divisors (see below), whose sum is σ = 368870112. Its totient is φ = 218112000.

The previous prime is 289997131. The next prime is 289997153. The reversal of 289997135 is 531799982.

It is not a de Polignac number, because 289997135 - 2² = 289997131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289997131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135020 + ... + 137150.

It is an arithmetic number, because the mean of its divisors is an integer number (23054382).

Almost surely, 2^289997135 is an apocalyptic number.

289997135 is a deficient number, since it is larger than the sum of its proper divisors (78872977).

289997135 is a wasteful number, since it uses less digits than its factorization.

289997135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754.

The product of its digits is 1224720, while the sum is 53.

The square root of 289997135 is about 17029.3022464222. The cubic root of 289997135 is about 661.9084150554.

The spelling of 289997135 in words is "two hundred eighty-nine million, nine hundred ninety-seven thousand, one hundred thirty-five".