289724361 has 8 divisors (see below), whose sum is σ = 386480640. Its totient is φ = 193058832.

The previous prime is 289724329. The next prime is 289724377. The reversal of 289724361 is 163427982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 289724361 - 2⁵ = 289724329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289724321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14850 + ... + 28283.

It is an arithmetic number, because the mean of its divisors is an integer number (48310080).

Almost surely, 2^289724361 is an apocalyptic number.

It is an amenable number.

289724361 is a deficient number, since it is larger than the sum of its proper divisors (96756279).

289724361 is a wasteful number, since it uses less digits than its factorization.

289724361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45375.

The product of its digits is 145152, while the sum is 42.

The square root of 289724361 is about 17021.2914022409. The cubic root of 289724361 is about 661.7008175504.

It can be divided in two parts, 28972 and 4361, that added together give a palindrome (33333).

The spelling of 289724361 in words is "two hundred eighty-nine million, seven hundred twenty-four thousand, three hundred sixty-one".