817043401 has 4 divisors (see below), whose sum is σ = 817264404. Its totient is φ = 816822400.

The previous prime is 817043393. The next prime is 817043411. The reversal of 817043401 is 104340718.

817043401 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 345067776 + 471975625 = 18576^2 + 21725^2 .

It is a cyclic number.

It is not a de Polignac number, because 817043401 - 2³ = 817043393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 817043401.

It is not an unprimeable number, because it can be changed into a prime (817043411) 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, 104860 + ... + 112381.

It is an arithmetic number, because the mean of its divisors is an integer number (204316101).

Almost surely, 2^817043401 is an apocalyptic number.

It is an amenable number.

817043401 is a deficient number, since it is larger than the sum of its proper divisors (221003).

817043401 is a wasteful number, since it uses less digits than its factorization.

817043401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221002.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 817043401 is about 28583.9710502232. The cubic root of 817043401 is about 934.8638695308.

The spelling of 817043401 in words is "eight hundred seventeen million, forty-three thousand, four hundred one".