289426378281 has 4 divisors (see below), whose sum is σ = 385901837712. Its totient is φ = 192950918852.

The previous prime is 289426378253. The next prime is 289426378393. The reversal of 289426378281 is 182873624982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 289426378281 - 2⁶ = 289426378217 is a prime.

It is a super-2 number, since 2×289426378281² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (289426378181) 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, 48237729711 + ... + 48237729716.

It is an arithmetic number, because the mean of its divisors is an integer number (96475459428).

Almost surely, 2^289426378281 is an apocalyptic number.

It is an amenable number.

289426378281 is a deficient number, since it is larger than the sum of its proper divisors (96475459431).

289426378281 is an equidigital number, since it uses as much as digits as its factorization.

289426378281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96475459430.

The product of its digits is 18579456, while the sum is 60.

The spelling of 289426378281 in words is "two hundred eighty-nine billion, four hundred twenty-six million, three hundred seventy-eight thousand, two hundred eighty-one".