822494401 has 4 divisors (see below), whose sum is σ = 865783600. Its totient is φ = 779205204.

The previous prime is 822494389. The next prime is 822494429. The reversal of 822494401 is 104494228.

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 822494401 - 2⁷ = 822494273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822494461) 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, 21644571 + ... + 21644608.

It is an arithmetic number, because the mean of its divisors is an integer number (216445900).

Almost surely, 2^822494401 is an apocalyptic number.

It is an amenable number.

822494401 is a deficient number, since it is larger than the sum of its proper divisors (43289199).

822494401 is a wasteful number, since it uses less digits than its factorization.

822494401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43289198.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 822494401 is about 28679.1631851419. The cubic root of 822494401 is about 936.9382807716.

The spelling of 822494401 in words is "eight hundred twenty-two million, four hundred ninety-four thousand, four hundred one".