289045903000 has 32 divisors (see below), whose sum is σ = 676367415360. Its totient is φ = 115618360800.

The previous prime is 289045902991. The next prime is 289045903007. The reversal of 289045903000 is 309540982.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289045903007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144521952 + ... + 144523951.

It is an arithmetic number, because the mean of its divisors is an integer number (21136481730).

Almost surely, 2^289045903000 is an apocalyptic number.

289045903000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289045903000 is an abundant number, since it is smaller than the sum of its proper divisors (387321512360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289045903000 is a wasteful number, since it uses less digits than its factorization.

289045903000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289045924 (or 289045910 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 289045903000 in words is "two hundred eighty-nine billion, forty-five million, nine hundred three thousand".