9609221787 has 8 divisors (see below), whose sum is σ = 13977049920. Its totient is φ = 5823770760.

The previous prime is 9609221771. The next prime is 9609221827. The reversal of 9609221787 is 7871229069.

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

It is not a de Polignac number, because 9609221787 - 2⁴ = 9609221771 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (9609221767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145594237 + ... + 145594302.

It is an arithmetic number, because the mean of its divisors is an integer number (1747131240).

Almost surely, 2^9609221787 is an apocalyptic number.

9609221787 is a deficient number, since it is larger than the sum of its proper divisors (4367828133).

9609221787 is a wasteful number, since it uses less digits than its factorization.

9609221787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291188553.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 9609221787 is about 98026.6381500457. The cubic root of 9609221787 is about 2125.9974491157.

The spelling of 9609221787 in words is "nine billion, six hundred nine million, two hundred twenty-one thousand, seven hundred eighty-seven".