289999481 has 8 divisors (see below), whose sum is σ = 307307520. Its totient is φ = 272719168.

The previous prime is 289999477. The next prime is 289999483. The reversal of 289999481 is 184999982.

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

It is not a de Polignac number, because 289999481 - 2² = 289999477 is a prime.

It is a super-2 number, since 2×289999481² = 168199397960538722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 289999481.

It is not an unprimeable number, because it can be changed into a prime (289999483) 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, 17000 + ... + 29478.

It is an arithmetic number, because the mean of its divisors is an integer number (38413440).

Almost surely, 2^289999481 is an apocalyptic number.

It is an amenable number.

289999481 is a deficient number, since it is larger than the sum of its proper divisors (17308039).

289999481 is a wasteful number, since it uses less digits than its factorization.

289999481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13863.

The product of its digits is 3359232, while the sum is 59.

The square root of 289999481 is about 17029.3711275549. The cubic root of 289999481 is about 661.9101999385.

The spelling of 289999481 in words is "two hundred eighty-nine million, nine hundred ninety-nine thousand, four hundred eighty-one".