989409835 has 12 divisors (see below), whose sum is σ = 1192588704. Its totient is φ = 788012160.

The previous prime is 989409829. The next prime is 989409931. The reversal of 989409835 is 538904989.

It is not a de Polignac number, because 989409835 - 2⁵ = 989409803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288702 + ... + 292108.

It is an arithmetic number, because the mean of its divisors is an integer number (99382392).

Almost surely, 2^989409835 is an apocalyptic number.

989409835 is a deficient number, since it is larger than the sum of its proper divisors (203178869).

989409835 is an equidigital number, since it uses as much as digits as its factorization.

989409835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894 (or 3653 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 989409835 is about 31454.8857095364. The cubic root of 989409835 is about 996.4574098750.

The spelling of 989409835 in words is "nine hundred eighty-nine million, four hundred nine thousand, eight hundred thirty-five".