989208447 has 8 divisors (see below), whose sum is σ = 1319475840. Its totient is φ = 659206680.

The previous prime is 989208433. The next prime is 989208491. The reversal of 989208447 is 744802989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 989208447 - 2⁶ = 989208383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 989208447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989207447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57547 + ... + 72732.

It is an arithmetic number, because the mean of its divisors is an integer number (164934480).

Almost surely, 2^989208447 is an apocalyptic number.

989208447 is a deficient number, since it is larger than the sum of its proper divisors (330267393).

989208447 is a wasteful number, since it uses less digits than its factorization.

989208447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132813.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 989208447 is about 31451.6843269164. The cubic root of 989208447 is about 996.3897977913.

The spelling of 989208447 in words is "nine hundred eighty-nine million, two hundred eight thousand, four hundred forty-seven".