812492593 has 4 divisors (see below), whose sum is σ = 886355568. Its totient is φ = 738629620.

The previous prime is 812492587. The next prime is 812492617. The reversal of 812492593 is 395294218.

812492593 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 812492593 - 2⁹ = 812492081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812492563) 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, 36931471 + ... + 36931492.

It is an arithmetic number, because the mean of its divisors is an integer number (221588892).

Almost surely, 2^812492593 is an apocalyptic number.

It is an amenable number.

812492593 is a deficient number, since it is larger than the sum of its proper divisors (73862975).

812492593 is a wasteful number, since it uses less digits than its factorization.

812492593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73862974.

The product of its digits is 155520, while the sum is 43.

The square root of 812492593 is about 28504.2556998074. The cubic root of 812492593 is about 933.1249536357.

The spelling of 812492593 in words is "eight hundred twelve million, four hundred ninety-two thousand, five hundred ninety-three".