289421901 has 12 divisors (see below), whose sum is σ = 418214940. Its totient is φ = 192873600.

The previous prime is 289421893. The next prime is 289421917. The reversal of 289421901 is 109124982.

It can be written as a sum of positive squares in 2 ways, for example, as 196280100 + 93141801 = 14010^2 + 9651^2 .

It is not a de Polignac number, because 289421901 - 2³ = 289421893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289421971) 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, 28965 + ... + 37653.

It is an arithmetic number, because the mean of its divisors is an integer number (34851245).

Almost surely, 2^289421901 is an apocalyptic number.

It is an amenable number.

289421901 is a deficient number, since it is larger than the sum of its proper divisors (128793039).

289421901 is a wasteful number, since it uses less digits than its factorization.

289421901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12396 (or 12393 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 289421901 is about 17012.4043274312. The cubic root of 289421901 is about 661.4704748041.

The spelling of 289421901 in words is "two hundred eighty-nine million, four hundred twenty-one thousand, nine hundred one".