811398 has 16 divisors (see below), whose sum is σ = 1854720. Its totient is φ = 231816.

The previous prime is 811387. The next prime is 811411. The reversal of 811398 is 893118.

It is an Ulam 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 811398.

It is an unprimeable number.

811398 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 7 ways as a sum of consecutive naturals, for example, 9618 + ... + 9701.

It is an arithmetic number, because the mean of its divisors is an integer number (115920).

2⁸¹¹³⁹⁸ is an apocalyptic number.

811398 is an abundant number, since it is smaller than the sum of its proper divisors (1043322).

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

811398 is a wasteful number, since it uses less digits than its factorization.

811398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19331.

The product of its digits is 1728, while the sum is 30.

The square root of 811398 is about 900.7763318383. The cubic root of 811398 is about 93.2705728866.

The spelling of 811398 in words is "eight hundred eleven thousand, three hundred ninety-eight".