9129469872 has 20 divisors (see below), whose sum is σ = 23584463960. Its totient is φ = 3043156608.

The previous prime is 9129469871. The next prime is 9129469933. The reversal of 9129469872 is 2789649219.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (9129469871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95098597 + ... + 95098692.

It is an arithmetic number, because the mean of its divisors is an integer number (1179223198).

Almost surely, 2^9129469872 is an apocalyptic number.

It is an amenable number.

9129469872 is an abundant number, since it is smaller than the sum of its proper divisors (14454994088).

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

9129469872 is a wasteful number, since it uses less digits than its factorization.

9129469872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190197300 (or 190197294 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 57.

The square root of 9129469872 is about 95548.2593875995. The cubic root of 9129469872 is about 2090.0107500038.

The spelling of 9129469872 in words is "nine billion, one hundred twenty-nine million, four hundred sixty-nine thousand, eight hundred seventy-two".