811100449 has 8 divisors (see below), whose sum is σ = 843422760. Its totient is φ = 779068416.

The previous prime is 811100441. The next prime is 811100453. The reversal of 811100449 is 944001118.

It can be written as a sum of positive squares in 4 ways, for example, as 169390225 + 641710224 = 13015^2 + 25332^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 811100449 - 2³ = 811100441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811100441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66862 + ... + 78055.

It is an arithmetic number, because the mean of its divisors is an integer number (105427845).

Almost surely, 2^811100449 is an apocalyptic number.

It is an amenable number.

811100449 is a deficient number, since it is larger than the sum of its proper divisors (32322311).

811100449 is a wasteful number, since it uses less digits than its factorization.

811100449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145139.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 811100449 is about 28479.8252979192. The cubic root of 811100449 is about 932.5917028461.

The spelling of 811100449 in words is "eight hundred eleven million, one hundred thousand, four hundred forty-nine".