289000247 has 4 divisors (see below), whose sum is σ = 289200600. Its totient is φ = 288799896.

The previous prime is 289000219. The next prime is 289000253. The reversal of 289000247 is 742000982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 289000247 - 2⁶ = 289000183 is a prime.

It is a super-2 number, since 2×289000247² = 167042285532122018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289000277) 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, 97997 + ... + 100902.

It is an arithmetic number, because the mean of its divisors is an integer number (72300150).

Almost surely, 2^289000247 is an apocalyptic number.

289000247 is a deficient number, since it is larger than the sum of its proper divisors (200353).

289000247 is a wasteful number, since it uses less digits than its factorization.

289000247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200352.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 289000247 is about 17000.0072647043. The cubic root of 289000247 is about 661.1490902007.

The spelling of 289000247 in words is "two hundred eighty-nine million, two hundred forty-seven", and thus it is an aban number.