810413971 has 4 divisors (see below), whose sum is σ = 810973944. Its totient is φ = 809854000.

The previous prime is 810413969. The next prime is 810413999. The reversal of 810413971 is 179314018.

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

It is a cyclic number.

It is not a de Polignac number, because 810413971 - 2¹ = 810413969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810413771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277810 + ... + 280711.

It is an arithmetic number, because the mean of its divisors is an integer number (202743486).

Almost surely, 2^810413971 is an apocalyptic number.

810413971 is a deficient number, since it is larger than the sum of its proper divisors (559973).

810413971 is a wasteful number, since it uses less digits than its factorization.

810413971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559972.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 810413971 is about 28467.7707416650. The cubic root of 810413971 is about 932.3285277216.

Adding to 810413971 its reverse (179314018), we get a palindrome (989727989).

The spelling of 810413971 in words is "eight hundred ten million, four hundred thirteen thousand, nine hundred seventy-one".