8791311408 has 80 divisors (see below), whose sum is σ = 24994935936. Its totient is φ = 2640440320.

The previous prime is 8791311349. The next prime is 8791311427. The reversal of 8791311408 is 8041131978.

It is a self number, because there is not a number n which added to its sum of digits gives 8791311408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14010 + ... + 133337.

Almost surely, 2^8791311408 is an apocalyptic number.

8791311408 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8791311408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12497467968).

8791311408 is an abundant number, since it is smaller than the sum of its proper divisors (16203624528).

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

8791311408 is a wasteful number, since it uses less digits than its factorization.

8791311408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147482 (or 147476 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 8791311408 is about 93761.9934088434. The cubic root of 8791311408 is about 2063.8805328665.

The spelling of 8791311408 in words is "eight billion, seven hundred ninety-one million, three hundred eleven thousand, four hundred eight".