989135361 has 16 divisors (see below), whose sum is σ = 1551585600. Its totient is φ = 620633664.

The previous prime is 989135359. The next prime is 989135363. The reversal of 989135361 is 163531989.

It is an interprime number because it is at equal distance from previous prime (989135359) and next prime (989135363).

It is not a de Polignac number, because 989135361 - 2¹ = 989135359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (989135363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077031 + ... + 1077948.

It is an arithmetic number, because the mean of its divisors is an integer number (96974100).

Almost surely, 2^989135361 is an apocalyptic number.

It is an amenable number.

989135361 is a deficient number, since it is larger than the sum of its proper divisors (562450239).

989135361 is a wasteful number, since it uses less digits than its factorization.

989135361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2155005 (or 2154999 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 989135361 is about 31450.5224280933. The cubic root of 989135361 is about 996.3652583262.

The spelling of 989135361 in words is "nine hundred eighty-nine million, one hundred thirty-five thousand, three hundred sixty-one".