9093490721 has 4 divisors (see below), whose sum is σ = 10392560832. Its totient is φ = 7794420612.

The previous prime is 9093490691. The next prime is 9093490729. The reversal of 9093490721 is 1270943909.

9093490721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9093490721 - 2¹⁰ = 9093489697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9093490729) 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, 649535045 + ... + 649535058.

It is an arithmetic number, because the mean of its divisors is an integer number (2598140208).

Almost surely, 2^9093490721 is an apocalyptic number.

It is an amenable number.

9093490721 is a deficient number, since it is larger than the sum of its proper divisors (1299070111).

9093490721 is a wasteful number, since it uses less digits than its factorization.

9093490721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299070110.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 9093490721 is about 95359.7961459650. The cubic root of 9093490721 is about 2087.2615647254.

The spelling of 9093490721 in words is "nine billion, ninety-three million, four hundred ninety thousand, seven hundred twenty-one".