836401 has 4 divisors (see below), whose sum is σ = 841204. Its totient is φ = 831600.

The previous prime is 836387. The next prime is 836413. The reversal of 836401 is 104638.

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 115600 + 720801 = 340^2 + 849^2 .

It is a cyclic number.

It is not a de Polignac number, because 836401 - 2⁵ = 836369 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (836471) 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, 2130 + ... + 2491.

It is an arithmetic number, because the mean of its divisors is an integer number (210301).

2⁸³⁶⁴⁰¹ is an apocalyptic number.

It is an amenable number.

836401 is a deficient number, since it is larger than the sum of its proper divisors (4803).

836401 is a wasteful number, since it uses less digits than its factorization.

836401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 836401 is about 914.5496159313. The cubic root of 836401 is about 94.2189328804.

The spelling of 836401 in words is "eight hundred thirty-six thousand, four hundred one".