8908991226 has 80 divisors (see below), whose sum is σ = 20767186440. Its totient is φ = 2851148160.

The previous prime is 8908991191. The next prime is 8908991227. The reversal of 8908991226 is 6221998098.

It can be written as a sum of positive squares in 4 ways, for example, as 6194477025 + 2714514201 = 78705^2 + 52101^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8908991227) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 845100 + ... + 855576.

Almost surely, 2^8908991226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8908991226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10383593220).

8908991226 is an abundant number, since it is smaller than the sum of its proper divisors (11858195214).

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

8908991226 is a wasteful number, since it uses less digits than its factorization.

8908991226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10701 (or 10692 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 8908991226 is about 94387.4526936711. The cubic root of 8908991226 is about 2073.0487274951.

The spelling of 8908991226 in words is "eight billion, nine hundred eight million, nine hundred ninety-one thousand, two hundred twenty-six".