289000923 has 16 divisors (see below), whose sum is σ = 395741472. Its totient is φ = 187488000.

The previous prime is 289000919. The next prime is 289000931. The reversal of 289000923 is 329000982.

It is not a de Polignac number, because 289000923 - 2² = 289000919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289000903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48993 + ... + 54573.

It is an arithmetic number, because the mean of its divisors is an integer number (24733842).

Almost surely, 2^289000923 is an apocalyptic number.

289000923 is a deficient number, since it is larger than the sum of its proper divisors (106740549).

289000923 is a wasteful number, since it uses less digits than its factorization.

289000923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6046.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 289000923 is about 17000.0271470371. The cubic root of 289000923 is about 661.1496056979.

The spelling of 289000923 in words is "two hundred eighty-nine million, nine hundred twenty-three", and thus it is an aban number.