989684739241 has 9 divisors (see below), whose sum is σ = 1087847320413. Its totient is φ = 899703451020.

The previous prime is 989684739157. The next prime is 989684739269. The reversal of 989684739241 is 142937486989.

The square root of 989684739241 is 994829.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 989684739241 - 2²³ = 989676350633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989684739941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10897900 + ... + 10988338.

Almost surely, 2^989684739241 is an apocalyptic number.

989684739241 is the 994829-th square number.

989684739241 is the 497415-th centered octagonal number.

It is an amenable number.

989684739241 is a deficient number, since it is larger than the sum of its proper divisors (98162581172).

989684739241 is an frugal number, since it uses more digits than its factorization.

989684739241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180900 (or 90450 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 70.

The spelling of 989684739241 in words is "nine hundred eighty-nine billion, six hundred eighty-four million, seven hundred thirty-nine thousand, two hundred forty-one".