822471493 has 4 divisors (see below), whose sum is σ = 827396640. Its totient is φ = 817546348.

The previous prime is 822471491. The next prime is 822471511. The reversal of 822471493 is 394174228.

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 822471493 - 2¹ = 822471491 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 (822471491) 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, 2462323 + ... + 2462656.

It is an arithmetic number, because the mean of its divisors is an integer number (206849160).

Almost surely, 2^822471493 is an apocalyptic number.

It is an amenable number.

822471493 is a deficient number, since it is larger than the sum of its proper divisors (4925147).

822471493 is a wasteful number, since it uses less digits than its factorization.

822471493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4925146.

The product of its digits is 96768, while the sum is 40.

The square root of 822471493 is about 28678.7637983230. The cubic root of 822471493 is about 936.9295821992.

The spelling of 822471493 in words is "eight hundred twenty-two million, four hundred seventy-one thousand, four hundred ninety-three".