289321401 has 4 divisors (see below), whose sum is σ = 385761872. Its totient is φ = 192880932.

The previous prime is 289321397. The next prime is 289321421. The reversal of 289321401 is 104123982.

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 not a de Polignac number, because 289321401 - 2² = 289321397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289321421) 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, 48220231 + ... + 48220236.

It is an arithmetic number, because the mean of its divisors is an integer number (96440468).

Almost surely, 2^289321401 is an apocalyptic number.

It is an amenable number.

289321401 is a deficient number, since it is larger than the sum of its proper divisors (96440471).

289321401 is an equidigital number, since it uses as much as digits as its factorization.

289321401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96440470.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 289321401 is about 17009.4503438530. The cubic root of 289321401 is about 661.3939020699.

The spelling of 289321401 in words is "two hundred eighty-nine million, three hundred twenty-one thousand, four hundred one".