9287403921 has 32 divisors (see below), whose sum is σ = 13866240000. Its totient is φ = 6143589504.

The previous prime is 9287403913. The next prime is 9287403941. The reversal of 9287403921 is 1293047829.

It is not a de Polignac number, because 9287403921 - 2³ = 9287403913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9287403911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1932880 + ... + 1937678.

It is an arithmetic number, because the mean of its divisors is an integer number (433320000).

Almost surely, 2^9287403921 is an apocalyptic number.

It is an amenable number.

9287403921 is a deficient number, since it is larger than the sum of its proper divisors (4578836079).

9287403921 is a wasteful number, since it uses less digits than its factorization.

9287403921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350 (or 5344 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 9287403921 is about 96371.1778541697. The cubic root of 9287403921 is about 2101.9938675264.

The spelling of 9287403921 in words is "nine billion, two hundred eighty-seven million, four hundred three thousand, nine hundred twenty-one".