989948 has 12 divisors (see below), whose sum is σ = 1739640. Its totient is φ = 492912.

The previous prime is 989939. The next prime is 989951. The reversal of 989948 is 849989.

It is a congruent number.

It is an unprimeable number.

989948 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190 + ... + 1842.

It is an arithmetic number, because the mean of its divisors is an integer number (144970).

2⁹⁸⁹⁹⁴⁸ is an apocalyptic number.

It is an amenable number.

989948 is a deficient number, since it is larger than the sum of its proper divisors (749692).

989948 is a wasteful number, since it uses less digits than its factorization.

989948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036 (or 1034 counting only the distinct ones).

The product of its digits is 186624, while the sum is 47.

The square root of 989948 is about 994.9613057803. The cubic root of 989948 is about 99.6638043247.

The spelling of 989948 in words is "nine hundred eighty-nine thousand, nine hundred forty-eight".