838811 has 4 divisors (see below), whose sum is σ = 852624. Its totient is φ = 825000.

The previous prime is 838807. The next prime is 838813. The reversal of 838811 is 118838.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118838 = 2 ⋅59419.

It is a cyclic number.

It is not a de Polignac number, because 838811 - 2² = 838807 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (838813) 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 3 ways as a sum of consecutive naturals, for example, 6815 + ... + 6936.

It is an arithmetic number, because the mean of its divisors is an integer number (213156).

2⁸³⁸⁸¹¹ is an apocalyptic number.

838811 is a deficient number, since it is larger than the sum of its proper divisors (13813).

838811 is a wasteful number, since it uses less digits than its factorization.

838811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13812.

The product of its digits is 1536, while the sum is 29.

The square root of 838811 is about 915.8662566117. The cubic root of 838811 is about 94.3093400281.

The spelling of 838811 in words is "eight hundred thirty-eight thousand, eight hundred eleven".