289188601 has 4 divisors (see below), whose sum is σ = 311433892. Its totient is φ = 266943312.

The previous prime is 289188589. The next prime is 289188611. The reversal of 289188601 is 106881982.

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 142778601 + 146410000 = 11949^2 + 12100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289188601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289188611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11122626 + ... + 11122651.

It is an arithmetic number, because the mean of its divisors is an integer number (77858473).

Almost surely, 2^289188601 is an apocalyptic number.

It is an amenable number.

289188601 is a deficient number, since it is larger than the sum of its proper divisors (22245291).

289188601 is a wasteful number, since it uses less digits than its factorization.

289188601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22245290.

The product of its (nonzero) digits is 55296, while the sum is 43.

The square root of 289188601 is about 17005.5461835250. The cubic root of 289188601 is about 661.2926921906.

The spelling of 289188601 in words is "two hundred eighty-nine million, one hundred eighty-eight thousand, six hundred one".