811199376 has 120 divisors (see below), whose sum is σ = 2573654720. Its totient is φ = 236452608.

The previous prime is 811199371. The next prime is 811199381. The reversal of 811199376 is 673991118.

It is an interprime number because it is at equal distance from previous prime (811199371) and next prime (811199381).

It is not an unprimeable number, because it can be changed into a prime (811199371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24165 + ... + 46971.

Almost surely, 2^811199376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 811199376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286827360).

811199376 is an abundant number, since it is smaller than the sum of its proper divisors (1762455344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811199376 is a wasteful number, since it uses less digits than its factorization.

811199376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22853 (or 22844 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 811199376 is about 28481.5620358154. The cubic root of 811199376 is about 932.6296162549.

The spelling of 811199376 in words is "eight hundred eleven million, one hundred ninety-nine thousand, three hundred seventy-six".