9129938454 has 48 divisors (see below), whose sum is σ = 24346506912. Its totient is φ = 2407895424.

The previous prime is 9129938453. The next prime is 9129938459. The reversal of 9129938454 is 4548399219.

It is a self number, because there is not a number n which added to its sum of digits gives 9129938454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9129938453) 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, 2785279 + ... + 2788554.

It is an arithmetic number, because the mean of its divisors is an integer number (507218894).

Almost surely, 2^9129938454 is an apocalyptic number.

9129938454 is an abundant number, since it is smaller than the sum of its proper divisors (15216568458).

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

9129938454 is a wasteful number, since it uses less digits than its factorization.

9129938454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573861 (or 5573858 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 9129938454 is about 95550.7114259229. The cubic root of 9129938454 is about 2090.0465069053.

The spelling of 9129938454 in words is "nine billion, one hundred twenty-nine million, nine hundred thirty-eight thousand, four hundred fifty-four".