9478073921 has 8 divisors (see below), whose sum is σ = 9636151104. Its totient is φ = 9320083920.

The previous prime is 9478073911. The next prime is 9478073953. The reversal of 9478073921 is 1293708749.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9478073921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9478073921.

It is not an unprimeable number, because it can be changed into a prime (9478073911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219500 + ... + 259106.

It is an arithmetic number, because the mean of its divisors is an integer number (1204518888).

Almost surely, 2^9478073921 is an apocalyptic number.

It is an amenable number.

9478073921 is a deficient number, since it is larger than the sum of its proper divisors (158077183).

9478073921 is a wasteful number, since it uses less digits than its factorization.

9478073921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43591.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 9478073921 is about 97355.4000608081. The cubic root of 9478073921 is about 2116.2811509627.

The spelling of 9478073921 in words is "nine billion, four hundred seventy-eight million, seventy-three thousand, nine hundred twenty-one".