289406417 has 4 divisors (see below), whose sum is σ = 289458276. Its totient is φ = 289354560.

The previous prime is 289406407. The next prime is 289406471. The reversal of 289406417 is 714604982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59459521 + 229946896 = 7711^2 + 15164^2 .

It is a cyclic number.

It is not a de Polignac number, because 289406417 - 2⁶ = 289406353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289406407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16388 + ... + 29109.

It is an arithmetic number, because the mean of its divisors is an integer number (72364569).

Almost surely, 2^289406417 is an apocalyptic number.

It is an amenable number.

289406417 is a deficient number, since it is larger than the sum of its proper divisors (51859).

289406417 is an equidigital number, since it uses as much as digits as its factorization.

289406417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51858.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 289406417 is about 17011.9492416360. The cubic root of 289406417 is about 661.4586784249.

The spelling of 289406417 in words is "two hundred eighty-nine million, four hundred six thousand, four hundred seventeen".