998392 has 8 divisors (see below), whose sum is σ = 1872000. Its totient is φ = 499192.

The previous prime is 998381. The next prime is 998399. The reversal of 998392 is 293899.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998392.

It is not an unprimeable number, because it can be changed into a prime (998399) by changing a digit.

998392 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62392 + ... + 62407.

It is an arithmetic number, because the mean of its divisors is an integer number (234000).

2⁹⁹⁸³⁹² is an apocalyptic number.

It is an amenable number.

998392 is a deficient number, since it is larger than the sum of its proper divisors (873608).

998392 is a wasteful number, since it uses less digits than its factorization.

998392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124805 (or 124801 counting only the distinct ones).

The product of its digits is 34992, while the sum is 40.

The square root of 998392 is about 999.1956765319. The cubic root of 998392 is about 99.9463712447.

The spelling of 998392 in words is "nine hundred ninety-eight thousand, three hundred ninety-two".