989053489 has 4 divisors (see below), whose sum is σ = 1047233124. Its totient is φ = 930873856.

The previous prime is 989053463. The next prime is 989053517. The reversal of 989053489 is 984350989.

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 889053489 + 100000000 = 29817^2 + 10000^2 .

It is a cyclic number.

It is not a de Polignac number, because 989053489 - 2⁷ = 989053361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989053589) 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, 29089792 + ... + 29089825.

It is an arithmetic number, because the mean of its divisors is an integer number (261808281).

Almost surely, 2^989053489 is an apocalyptic number.

It is an amenable number.

989053489 is a deficient number, since it is larger than the sum of its proper divisors (58179635).

989053489 is a wasteful number, since it uses less digits than its factorization.

989053489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58179634.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 989053489 is about 31449.2208011582. The cubic root of 989053489 is about 996.3377674251.

The spelling of 989053489 in words is "nine hundred eighty-nine million, fifty-three thousand, four hundred eighty-nine".