823448473 has 2 divisors, whose sum is σ = 823448474. Its totient is φ = 823448472.

The previous prime is 823448447. The next prime is 823448531. The reversal of 823448473 is 374844328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 800437264 + 23011209 = 28292^2 + 4797^2 .

It is a cyclic number.

It is not a de Polignac number, because 823448473 - 2⁵ = 823448441 is a prime.

It is equal to p_42289486 and since 823448473 and 42289486 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (823448173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411724236 + 411724237.

It is an arithmetic number, because the mean of its divisors is an integer number (411724237).

Almost surely, 2^823448473 is an apocalyptic number.

It is an amenable number.

823448473 is a deficient number, since it is larger than the sum of its proper divisors (1).

823448473 is an equidigital number, since it uses as much as digits as its factorization.

823448473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 43.

The square root of 823448473 is about 28695.7919040406. The cubic root of 823448473 is about 937.3004154216.

The spelling of 823448473 in words is "eight hundred twenty-three million, four hundred forty-eight thousand, four hundred seventy-three".