9291329892 has 72 divisors (see below), whose sum is σ = 25355428280. Its totient is φ = 2851822080.

The previous prime is 9291329819. The next prime is 9291329893. The reversal of 9291329892 is 2989231929.

It can be written as a sum of positive squares in 4 ways, for example, as 111007296 + 9180322596 = 10536^2 + 95814^2 .

It is a super-2 number, since 2×9291329892² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9291329893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167142 + ... + 215682.

Almost surely, 2^9291329892 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 9291329892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12677714140).

9291329892 is an abundant number, since it is smaller than the sum of its proper divisors (16064098388).

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

9291329892 is a wasteful number, since it uses less digits than its factorization.

9291329892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48973 (or 48968 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 9291329892 is about 96391.5447121790. The cubic root of 9291329892 is about 2102.2900107220.

The spelling of 9291329892 in words is "nine billion, two hundred ninety-one million, three hundred twenty-nine thousand, eight hundred ninety-two".