822494399 has 8 divisors (see below), whose sum is σ = 843369408. Its totient is φ = 801658240.

The previous prime is 822494389. The next prime is 822494429. The reversal of 822494399 is 993494228.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 822494399 - 2⁴ = 822494383 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 (822494339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35834 + ... + 54120.

It is an arithmetic number, because the mean of its divisors is an integer number (105421176).

Almost surely, 2^822494399 is an apocalyptic number.

822494399 is a deficient number, since it is larger than the sum of its proper divisors (20875009).

822494399 is a wasteful number, since it uses less digits than its factorization.

822494399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19425.

The product of its digits is 1119744, while the sum is 50.

The square root of 822494399 is about 28679.1631502734. The cubic root of 822494399 is about 936.9382800122.

The spelling of 822494399 in words is "eight hundred twenty-two million, four hundred ninety-four thousand, three hundred ninety-nine".