989398 has 4 divisors (see below), whose sum is σ = 1484100. Its totient is φ = 494698.

The previous prime is 989381. The next prime is 989411. The reversal of 989398 is 893989.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

989398 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247348 + ... + 247351.

It is an arithmetic number, because the mean of its divisors is an integer number (371025).

2⁹⁸⁹³⁹⁸ is an apocalyptic number.

989398 is a deficient number, since it is larger than the sum of its proper divisors (494702).

989398 is a wasteful number, since it uses less digits than its factorization.

989398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494701.

The product of its digits is 139968, while the sum is 46.

The square root of 989398 is about 994.6848747216. The cubic root of 989398 is about 99.6453436759.

The spelling of 989398 in words is "nine hundred eighty-nine thousand, three hundred ninety-eight".