9008739228 has 48 divisors (see below), whose sum is σ = 21223671840. Its totient is φ = 2973917184.

The previous prime is 9008739193. The next prime is 9008739239. The reversal of 9008739228 is 8229378009.

It is a happy number.

It is a congruent number.

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, 2559726 + ... + 2563242.

It is an arithmetic number, because the mean of its divisors is an integer number (442159830).

Almost surely, 2^9008739228 is an apocalyptic number.

It is an amenable number.

9008739228 is an abundant number, since it is smaller than the sum of its proper divisors (12214932612).

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

9008739228 is a wasteful number, since it uses less digits than its factorization.

9008739228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5526 (or 5524 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 9008739228 is about 94914.3784049603. The cubic root of 9008739228 is about 2080.7568766108.

The spelling of 9008739228 in words is "nine billion, eight million, seven hundred thirty-nine thousand, two hundred twenty-eight".