319998 has 32 divisors (see below), whose sum is σ = 771840. Its totient is φ = 86400.

The previous prime is 319993. The next prime is 320009. The reversal of 319998 is 899913.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319993) by changing a digit.

319998 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 in 15 ways as a sum of consecutive naturals, for example, 598 + ... + 998.

It is an arithmetic number, because the mean of its divisors is an integer number (24120).

2³¹⁹⁹⁹⁸ is an apocalyptic number.

319998 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 319998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385920).

319998 is an abundant number, since it is smaller than the sum of its proper divisors (451842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

319998 is a wasteful number, since it uses less digits than its factorization.

319998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its digits is 17496, while the sum is 39.

The square root of 319998 is about 565.6836571795. The cubic root of 319998 is about 68.3988953688.

The spelling of 319998 in words is "three hundred nineteen thousand, nine hundred ninety-eight".