823901 has 4 divisors (see below), whose sum is σ = 887292. Its totient is φ = 760512.

The previous prime is 823877. The next prime is 823903. The reversal of 823901 is 109328.

823901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60025 + 763876 = 245^2 + 874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-823901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31676 + ... + 31701.

It is an arithmetic number, because the mean of its divisors is an integer number (221823).

2⁸²³⁹⁰¹ is an apocalyptic number.

It is an amenable number.

823901 is a deficient number, since it is larger than the sum of its proper divisors (63391).

823901 is a wasteful number, since it uses less digits than its factorization.

823901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63390.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 823901 is about 907.6899250295. The cubic root of 823901 is about 93.7472082132.

The spelling of 823901 in words is "eight hundred twenty-three thousand, nine hundred one".