8249091000 has 128 divisors (see below), whose sum is σ = 26159664960. Its totient is φ = 2163648000.

The previous prime is 8249090963. The next prime is 8249091007. The reversal of 8249091000 is 1909428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8249091007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160462 + ... + 205538.

Almost surely, 2^8249091000 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 8249091000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13079832480).

8249091000 is an abundant number, since it is smaller than the sum of its proper divisors (17910573960).

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

8249091000 is a wasteful number, since it uses less digits than its factorization.

8249091000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45162 (or 45148 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 8249091000 is about 90824.5066047705. The cubic root of 8249091000 is about 2020.5457957231.

The spelling of 8249091000 in words is "eight billion, two hundred forty-nine million, ninety-one thousand".