989919135 has 12 divisors (see below), whose sum is σ = 1715859912. Its totient is φ = 527956848.

The previous prime is 989919121. The next prime is 989919137. The reversal of 989919135 is 531919989.

It is not a de Polignac number, because 989919135 - 2⁶ = 989919071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989919137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10999057 + ... + 10999146.

It is an arithmetic number, because the mean of its divisors is an integer number (142988326).

Almost surely, 2^989919135 is an apocalyptic number.

989919135 is a deficient number, since it is larger than the sum of its proper divisors (725940777).

989919135 is a wasteful number, since it uses less digits than its factorization.

989919135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21998214 (or 21998211 counting only the distinct ones).

The product of its digits is 787320, while the sum is 54.

The square root of 989919135 is about 31462.9803896579. The cubic root of 989919135 is about 996.6283564628.

The spelling of 989919135 in words is "nine hundred eighty-nine million, nine hundred nineteen thousand, one hundred thirty-five".