289223901 has 6 divisors (see below), whose sum is σ = 417767870. Its totient is φ = 192815928.

The previous prime is 289223887. The next prime is 289223911. The reversal of 289223901 is 109322982.

It can be written as a sum of positive squares in only one way, i.e., 216531225 + 72692676 = 14715^2 + 8526^2 .

It is not a de Polignac number, because 289223901 - 2⁷ = 289223773 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 (289223911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16067986 + ... + 16068003.

Almost surely, 2^289223901 is an apocalyptic number.

It is an amenable number.

289223901 is a deficient number, since it is larger than the sum of its proper divisors (128543969).

289223901 is a wasteful number, since it uses less digits than its factorization.

289223901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32135995 (or 32135992 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 289223901 is about 17006.5840485384. The cubic root of 289223901 is about 661.3195981408.

It can be divided in two parts, 28922 and 3901, that added together give a palindrome (32823).

The spelling of 289223901 in words is "two hundred eighty-nine million, two hundred twenty-three thousand, nine hundred one".