823498401 has 16 divisors (see below), whose sum is σ = 1200994560. Its totient is φ = 497765520.

The previous prime is 823498397. The next prime is 823498433. The reversal of 823498401 is 104894328.

It is not a de Polignac number, because 823498401 - 2² = 823498397 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 823498401.

It is not an unprimeable number, because it can be changed into a prime (823498451) 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 15 ways as a sum of consecutive naturals, for example, 20415 + ... + 45428.

It is an arithmetic number, because the mean of its divisors is an integer number (75062160).

Almost surely, 2^823498401 is an apocalyptic number.

It is an amenable number.

823498401 is a deficient number, since it is larger than the sum of its proper divisors (377496159).

823498401 is a wasteful number, since it uses less digits than its factorization.

823498401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66236.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 823498401 is about 28696.6618441937. The cubic root of 823498401 is about 937.3193587600.

The spelling of 823498401 in words is "eight hundred twenty-three million, four hundred ninety-eight thousand, four hundred one".