289986641 has 8 divisors (see below), whose sum is σ = 334830720. Its totient is φ = 245996928.

The previous prime is 289986637. The next prime is 289986647. The reversal of 289986641 is 146689982.

It is a happy number.

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 289986641 - 2² = 289986637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289986647) 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, 212861 + ... + 214218.

It is an arithmetic number, because the mean of its divisors is an integer number (41853840).

Almost surely, 2^289986641 is an apocalyptic number.

It is an amenable number.

289986641 is a deficient number, since it is larger than the sum of its proper divisors (44844079).

289986641 is an equidigital number, since it uses as much as digits as its factorization.

289986641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427183.

The product of its digits is 1492992, while the sum is 53.

The square root of 289986641 is about 17028.9941276636. The cubic root of 289986641 is about 661.9004308952.

The spelling of 289986641 in words is "two hundred eighty-nine million, nine hundred eighty-six thousand, six hundred forty-one".