811448961 has 8 divisors (see below), whose sum is σ = 1111173504. Its totient is φ = 526345200.

The previous prime is 811448959. The next prime is 811448969. The reversal of 811448961 is 169844118.

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 811448961 - 2¹ = 811448959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (811448969) 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, 3655065 + ... + 3655286.

It is an arithmetic number, because the mean of its divisors is an integer number (138896688).

Almost surely, 2^811448961 is an apocalyptic number.

It is an amenable number.

811448961 is a deficient number, since it is larger than the sum of its proper divisors (299724543).

811448961 is a wasteful number, since it uses less digits than its factorization.

811448961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310391.

The product of its digits is 55296, while the sum is 42.

The square root of 811448961 is about 28485.9432176644. The cubic root of 811448961 is about 932.7252550918.

It can be divided in two parts, 8114 and 48961, that added together give a palindrome (57075).

The spelling of 811448961 in words is "eight hundred eleven million, four hundred forty-eight thousand, nine hundred sixty-one".