989282989 has 4 divisors (see below), whose sum is σ = 1047476124. Its totient is φ = 931089856.

The previous prime is 989282947. The next prime is 989283007.

989282989 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 579220489 + 410062500 = 24067^2 + 20250^2 .

It is a cyclic number.

It is not a de Polignac number, because 989282989 - 2¹⁵ = 989250221 is a prime.

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 989282989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989289989) 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, 29096542 + ... + 29096575.

It is an arithmetic number, because the mean of its divisors is an integer number (261869031).

Almost surely, 2^989282989 is an apocalyptic number.

It is an amenable number.

989282989 is a deficient number, since it is larger than the sum of its proper divisors (58193135).

989282989 is a wasteful number, since it uses less digits than its factorization.

989282989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58193134.

The product of its digits is 13436928, while the sum is 64.

The square root of 989282989 is about 31452.8693285684. The cubic root of 989282989 is about 996.4148248800.

The spelling of 989282989 in words is "nine hundred eighty-nine million, two hundred eighty-two thousand, nine hundred eighty-nine".