989505463432 has 8 divisors (see below), whose sum is σ = 1855322743950. Its totient is φ = 494752731712.

The previous prime is 989505463403. The next prime is 989505463447. The reversal of 989505463432 is 234364505989.

It can be written as a sum of positive squares in only one way, i.e., 888619187556 + 100886275876 = 942666^2 + 317626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61844091457 + ... + 61844091472.

Almost surely, 2^989505463432 is an apocalyptic number.

It is an amenable number.

989505463432 is a deficient number, since it is larger than the sum of its proper divisors (865817280518).

989505463432 is a wasteful number, since it uses less digits than its factorization.

989505463432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123688182935 (or 123688182931 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 989505463432 in words is "nine hundred eighty-nine billion, five hundred five million, four hundred sixty-three thousand, four hundred thirty-two".