9423128722 has 16 divisors (see below), whose sum is σ = 16156729152. Its totient is φ = 4037785200.

The previous prime is 9423128719. The next prime is 9423128783. The reversal of 9423128722 is 2278213249.

It is a happy number.

It is a super-2 number, since 2×9423128722² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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, 30253 + ... + 140575.

It is an arithmetic number, because the mean of its divisors is an integer number (1009795572).

Almost surely, 2^9423128722 is an apocalyptic number.

9423128722 is a deficient number, since it is larger than the sum of its proper divisors (6733600430).

9423128722 is a wasteful number, since it uses less digits than its factorization.

9423128722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116433.

The product of its digits is 96768, while the sum is 40.

The square root of 9423128722 is about 97072.8011442958. The cubic root of 9423128722 is about 2112.1838026888.

The spelling of 9423128722 in words is "nine billion, four hundred twenty-three million, one hundred twenty-eight thousand, seven hundred twenty-two".