823952497 has 2 divisors, whose sum is σ = 823952498. Its totient is φ = 823952496.

The previous prime is 823952471. The next prime is 823952527. The reversal of 823952497 is 794259328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 642673201 + 181279296 = 25351^2 + 13464^2 .

It is a cyclic number.

It is not a de Polignac number, because 823952497 - 2²⁷ = 689734769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 823952497.

It is not a weakly prime, because it can be changed into another prime (823952407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411976248 + 411976249.

It is an arithmetic number, because the mean of its divisors is an integer number (411976249).

Almost surely, 2^823952497 is an apocalyptic number.

It is an amenable number.

823952497 is a deficient number, since it is larger than the sum of its proper divisors (1).

823952497 is an equidigital number, since it uses as much as digits as its factorization.

823952497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 823952497 is about 28704.5727541798. The cubic root of 823952497 is about 937.4916136020.

The spelling of 823952497 in words is "eight hundred twenty-three million, nine hundred fifty-two thousand, four hundred ninety-seven".