810086399 has 8 divisors (see below), whose sum is σ = 832345920. Its totient is φ = 787846176.

The previous prime is 810086383. The next prime is 810086401. The reversal of 810086399 is 993680018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 810086399 - 2⁴ = 810086383 is a prime.

It is a super-3 number, since 3×810086399³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810086999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134282 + ... + 140184.

It is an arithmetic number, because the mean of its divisors is an integer number (104043240).

Almost surely, 2^810086399 is an apocalyptic number.

810086399 is a deficient number, since it is larger than the sum of its proper divisors (22259521).

810086399 is a wasteful number, since it uses less digits than its factorization.

810086399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9649.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 810086399 is about 28462.0167767500. The cubic root of 810086399 is about 932.2028940376.

The spelling of 810086399 in words is "eight hundred ten million, eighty-six thousand, three hundred ninety-nine".