1239798 has 24 divisors (see below), whose sum is σ = 2885112. Its totient is φ = 354144.

The previous prime is 1239773. The next prime is 1239803. The reversal of 1239798 is 8979321.

It is a congruent number.

It is an unprimeable 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 11 ways as a sum of consecutive naturals, for example, 1815 + ... + 2402.

It is an arithmetic number, because the mean of its divisors is an integer number (120213).

2^1239798 is an apocalyptic number.

1239798 is an abundant number, since it is smaller than the sum of its proper divisors (1645314).

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

1239798 is a wasteful number, since it uses less digits than its factorization.

1239798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236 (or 4229 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 1239798 is about 1113.4621681943. The cubic root of 1239798 is about 107.4278730163.

The spelling of 1239798 in words is "one million, two hundred thirty-nine thousand, seven hundred ninety-eight".