838998 has 20 divisors (see below), whose sum is σ = 1880340. Its totient is φ = 279612.

The previous prime is 838993. The next prime is 839009. The reversal of 838998 is 899838.

Its product of digits (124416) is a multiple of the sum of its prime divisors (5184).

It is a Curzon number.

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 838998.

It is not an unprimeable number, because it can be changed into a prime (838991) 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 9 ways as a sum of consecutive naturals, for example, 2428 + ... + 2751.

It is an arithmetic number, because the mean of its divisors is an integer number (94017).

2⁸³⁸⁹⁹⁸ is an apocalyptic number.

838998 is an abundant number, since it is smaller than the sum of its proper divisors (1041342).

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

838998 is a wasteful number, since it uses less digits than its factorization.

838998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5193 (or 5184 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 838998 is about 915.9683400642. The cubic root of 838998 is about 94.3163477793.

The spelling of 838998 in words is "eight hundred thirty-eight thousand, nine hundred ninety-eight".