812458093 has 4 divisors (see below), whose sum is σ = 814760028. Its totient is φ = 810156160.

The previous prime is 812458081. The next prime is 812458103. The reversal of 812458093 is 390854218.

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 161340804 + 651117289 = 12702^2 + 25517^2 .

It is a cyclic number.

It is not a de Polignac number, because 812458093 - 2⁵ = 812458061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812458043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150438 + ... + 1151143.

It is an arithmetic number, because the mean of its divisors is an integer number (203690007).

Almost surely, 2^812458093 is an apocalyptic number.

It is an amenable number.

812458093 is a deficient number, since it is larger than the sum of its proper divisors (2301935).

812458093 is a wasteful number, since it uses less digits than its factorization.

812458093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301934.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 812458093 is about 28503.6505205912. The cubic root of 812458093 is about 933.1117460213. Note that the first 3 decimals are identical.

The spelling of 812458093 in words is "eight hundred twelve million, four hundred fifty-eight thousand, ninety-three".