289429661 has 8 divisors (see below), whose sum is σ = 295419960. Its totient is φ = 283459072.

The previous prime is 289429649. The next prime is 289429663. The reversal of 289429661 is 166924982.

It can be written as a sum of positive squares in 4 ways, for example, as 38365636 + 251064025 = 6194^2 + 15845^2 .

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 289429661 - 2¹⁰ = 289428637 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 (289429663) 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, 26825 + ... + 36033.

It is an arithmetic number, because the mean of its divisors is an integer number (36927495).

Almost surely, 2^289429661 is an apocalyptic number.

It is an amenable number.

289429661 is a deficient number, since it is larger than the sum of its proper divisors (5990299).

289429661 is an equidigital number, since it uses as much as digits as its factorization.

289429661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9855.

The product of its digits is 373248, while the sum is 47.

The square root of 289429661 is about 17012.6323947824. The cubic root of 289429661 is about 661.4763865486.

The spelling of 289429661 in words is "two hundred eighty-nine million, four hundred twenty-nine thousand, six hundred sixty-one".