9219634721 has 8 divisors (see below), whose sum is σ = 10134561888. Its totient is φ = 8317504000.

The previous prime is 9219634703. The next prime is 9219634741. The reversal of 9219634721 is 1274369129.

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

It is a cyclic number.

It is not a de Polignac number, because 9219634721 - 2²⁶ = 9152525857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9219634741) 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 7 ways as a sum of consecutive naturals, for example, 3197600 + ... + 3200481.

It is an arithmetic number, because the mean of its divisors is an integer number (1266820236).

Almost surely, 2^9219634721 is an apocalyptic number.

It is an amenable number.

9219634721 is a deficient number, since it is larger than the sum of its proper divisors (914927167).

9219634721 is a wasteful number, since it uses less digits than its factorization.

9219634721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6398223.

The product of its digits is 163296, while the sum is 44.

The square root of 9219634721 is about 96018.9289723646. The cubic root of 9219634721 is about 2096.8687059855.

The spelling of 9219634721 in words is "nine billion, two hundred nineteen million, six hundred thirty-four thousand, seven hundred twenty-one".