989177441476 has 81 divisors (see below), whose sum is σ = 2125812565359. Its totient is φ = 401513502096.

The previous prime is 989177441471. The next prime is 989177441507. The reversal of 989177441476 is 674144771989.

The square root of 989177441476 is 994574.

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

It is not an unprimeable number, because it can be changed into a prime (989177441471) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 264554815 + ... + 264558553.

Almost surely, 2^989177441476 is an apocalyptic number.

989177441476 is the 994574-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989177441476

989177441476 is an abundant number, since it is smaller than the sum of its proper divisors (1136635123883).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989177441476 is an equidigital number, since it uses as much as digits as its factorization.

989177441476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7534 (or 3767 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 67.

The spelling of 989177441476 in words is "nine hundred eighty-nine billion, one hundred seventy-seven million, four hundred forty-one thousand, four hundred seventy-six".