289620269 has 8 divisors (see below), whose sum is σ = 297076920. Its totient is φ = 282182400.

The previous prime is 289620263. The next prime is 289620271. The reversal of 289620269 is 962026982.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5697769 + 283922500 = 2387^2 + 16850^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 289620269 - 2²⁰ = 288571693 is a prime.

It is a super-2 number, since 2×289620269² = 167759800431264722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289620263) 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 7 ways as a sum of consecutive naturals, for example, 29729 + ... + 38249.

It is an arithmetic number, because the mean of its divisors is an integer number (37134615).

Almost surely, 2^289620269 is an apocalyptic number.

It is an amenable number.

289620269 is a deficient number, since it is larger than the sum of its proper divisors (7456651).

289620269 is an equidigital number, since it uses as much as digits as its factorization.

289620269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9391.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 289620269 is about 17018.2334277092. The cubic root of 289620269 is about 661.6215628964.

The spelling of 289620269 in words is "two hundred eighty-nine million, six hundred twenty thousand, two hundred sixty-nine".