9139272012 has 192 divisors, whose sum is σ = 27596298240. Its totient is φ = 2590036992.

The previous prime is 9139271983. The next prime is 9139272031. The reversal of 9139272012 is 2102729319.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1117723 + ... + 1125869.

It is an arithmetic number, because the mean of its divisors is an integer number (143730720).

Almost surely, 2^9139272012 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 9139272012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13798149120).

9139272012 is an abundant number, since it is smaller than the sum of its proper divisors (18457026228).

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

9139272012 is a wasteful number, since it uses less digits than its factorization.

9139272012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8237 (or 8229 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 9139272012 is about 95599.5398106079. The cubic root of 9139272012 is about 2090.7584841955.

The spelling of 9139272012 in words is "nine billion, one hundred thirty-nine million, two hundred seventy-two thousand, twelve".