289730691 has 12 divisors (see below), whose sum is σ = 419597568. Its totient is φ = 192647184.

The previous prime is 289730671. The next prime is 289730729. The reversal of 289730691 is 196037982.

It is not a de Polignac number, because 289730691 - 2¹¹ = 289728643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289730671) 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 11 ways as a sum of consecutive naturals, for example, 38580 + ... + 45473.

It is an arithmetic number, because the mean of its divisors is an integer number (34966464).

Almost surely, 2^289730691 is an apocalyptic number.

289730691 is a deficient number, since it is larger than the sum of its proper divisors (129866877).

289730691 is a wasteful number, since it uses less digits than its factorization.

289730691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84442 (or 84439 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 289730691 is about 17021.4773448135. The cubic root of 289730691 is about 661.7056365395.

The spelling of 289730691 in words is "two hundred eighty-nine million, seven hundred thirty thousand, six hundred ninety-one".