981003289 has 4 divisors (see below), whose sum is σ = 1121146624. Its totient is φ = 840859956.

The previous prime is 981003263. The next prime is 981003349. The reversal of 981003289 is 982300189.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 981003289 - 2²³ = 972614681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981003229) 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, 70071657 + ... + 70071670.

It is an arithmetic number, because the mean of its divisors is an integer number (280286656).

Almost surely, 2^981003289 is an apocalyptic number.

It is an amenable number.

981003289 is a deficient number, since it is larger than the sum of its proper divisors (140143335).

981003289 is a wasteful number, since it uses less digits than its factorization.

981003289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140143334.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 981003289 is about 31320.9720315318. The cubic root of 981003289 is about 993.6272371643.

The spelling of 981003289 in words is "nine hundred eighty-one million, three thousand, two hundred eighty-nine".