822258993 has 16 divisors (see below), whose sum is σ = 1144679040. Its totient is φ = 524033664.

The previous prime is 822258989. The next prime is 822259003. The reversal of 822258993 is 399852228.

It is not a de Polignac number, because 822258993 - 2² = 822258989 is a prime.

It is a super-2 number, since 2×822258993² = 1352219703138748098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (822258923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212605 + ... + 216437.

It is an arithmetic number, because the mean of its divisors is an integer number (71542440).

Almost surely, 2^822258993 is an apocalyptic number.

It is an amenable number.

822258993 is a deficient number, since it is larger than the sum of its proper divisors (322420047).

822258993 is a wasteful number, since it uses less digits than its factorization.

822258993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6968.

The product of its digits is 622080, while the sum is 48.

The square root of 822258993 is about 28675.0587270541. The cubic root of 822258993 is about 936.8488844943.

The spelling of 822258993 in words is "eight hundred twenty-two million, two hundred fifty-eight thousand, nine hundred ninety-three".