818449047 has 24 divisors (see below), whose sum is σ = 1278513600. Its totient is φ = 501536448.

The previous prime is 818449013. The next prime is 818449061. The reversal of 818449047 is 740944818.

818449047 is a `hidden beast` number, since 81 + 84 + 490 + 4 + 7 = 666.

It is not a de Polignac number, because 818449047 - 2¹⁰ = 818448023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 818448993 and 818449011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818449147) 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 23 ways as a sum of consecutive naturals, for example, 13329 + ... + 42597.

It is an arithmetic number, because the mean of its divisors is an integer number (53271400).

Almost surely, 2^818449047 is an apocalyptic number.

818449047 is a deficient number, since it is larger than the sum of its proper divisors (460064553).

818449047 is a wasteful number, since it uses less digits than its factorization.

818449047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29527 (or 29524 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 818449047 is about 28608.5484951614. The cubic root of 818449047 is about 935.3996773751.

The spelling of 818449047 in words is "eight hundred eighteen million, four hundred forty-nine thousand, forty-seven".