9774949992 has 64 divisors (see below), whose sum is σ = 25151731200. Its totient is φ = 3164441280.

The previous prime is 9774949979. The next prime is 9774949997. The reversal of 9774949992 is 2999494779.

It is a super-2 number, since 2×9774949992² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9774949997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71359 + ... + 156977.

It is an arithmetic number, because the mean of its divisors is an integer number (392995800).

Almost surely, 2^9774949992 is an apocalyptic number.

It is an amenable number.

9774949992 is an abundant number, since it is smaller than the sum of its proper divisors (15376781208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9774949992 is a wasteful number, since it uses less digits than its factorization.

9774949992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85766 (or 85762 counting only the distinct ones).

The product of its digits is 92588832, while the sum is 69.

The square root of 9774949992 is about 98868.3467647760. The cubic root of 9774949992 is about 2138.1500587589.

It can be divided in two parts, 97749 and 49992, that added together give a palindrome (147741).

The spelling of 9774949992 in words is "nine billion, seven hundred seventy-four million, nine hundred forty-nine thousand, nine hundred ninety-two".