1339998 has 32 divisors (see below), whose sum is σ = 2972160. Its totient is φ = 399360.

The previous prime is 1339993. The next prime is 1340011. The reversal of 1339998 is 8999331.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339993) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 5086 + ... + 5342.

It is an arithmetic number, because the mean of its divisors is an integer number (92880).

2^1339998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1339998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486080).

1339998 is an abundant number, since it is smaller than the sum of its proper divisors (1632162).

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

1339998 is a wasteful number, since it uses less digits than its factorization.

1339998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352.

The product of its digits is 52488, while the sum is 42.

The square root of 1339998 is about 1157.5828264103. The cubic root of 1339998 is about 110.2473222955.

The spelling of 1339998 in words is "one million, three hundred thirty-nine thousand, nine hundred ninety-eight".