814244817 has 4 divisors (see below), whose sum is σ = 1085659760. Its totient is φ = 542829876.

The previous prime is 814244813. The next prime is 814244819. The reversal of 814244817 is 718442418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 814244817 - 2² = 814244813 is a prime.

It is a super-2 number, since 2×814244817² = 1325989244022726978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814244813) 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, 135707467 + ... + 135707472.

It is an arithmetic number, because the mean of its divisors is an integer number (271414940).

Almost surely, 2^814244817 is an apocalyptic number.

It is an amenable number.

814244817 is a deficient number, since it is larger than the sum of its proper divisors (271414943).

814244817 is a wasteful number, since it uses less digits than its factorization.

814244817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271414942.

The product of its digits is 57344, while the sum is 39.

The square root of 814244817 is about 28534.9753285332. The cubic root of 814244817 is about 933.7952653730.

The spelling of 814244817 in words is "eight hundred fourteen million, two hundred forty-four thousand, eight hundred seventeen".