9723772990 has 16 divisors (see below), whose sum is σ = 17541781200. Its totient is φ = 3880844800.

The previous prime is 9723772969. The next prime is 9723773009. The reversal of 9723772990 is 992773279.

It is a super-2 number, since 2×9723772990² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 1078336 + ... + 1087315.

It is an arithmetic number, because the mean of its divisors is an integer number (1096361325).

Almost surely, 2^9723772990 is an apocalyptic number.

9723772990 is a deficient number, since it is larger than the sum of its proper divisors (7818008210).

9723772990 is a wasteful number, since it uses less digits than its factorization.

9723772990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166107.

The product of its (nonzero) digits is 3000564, while the sum is 55.

The square root of 9723772990 is about 98609.1932326799. The cubic root of 9723772990 is about 2134.4120811884.

The spelling of 9723772990 in words is "nine billion, seven hundred twenty-three million, seven hundred seventy-two thousand, nine hundred ninety".