9976779232 has 24 divisors (see below), whose sum is σ = 22447753776. Its totient is φ = 4275762432.

The previous prime is 9976779229. The next prime is 9976779233. The reversal of 9976779232 is 2329776799.

It is a super-2 number, since 2×9976779232² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976779233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22269373 + ... + 22269820.

It is an arithmetic number, because the mean of its divisors is an integer number (935323074).

Almost surely, 2^9976779232 is an apocalyptic number.

It is an amenable number.

9976779232 is an abundant number, since it is smaller than the sum of its proper divisors (12470974544).

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

9976779232 is a wasteful number, since it uses less digits than its factorization.

9976779232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44539210 (or 44539202 counting only the distinct ones).

The product of its digits is 18003384, while the sum is 61.

The square root of 9976779232 is about 99883.8286811234. The cubic root of 9976779232 is about 2152.7658100051.

The spelling of 9976779232 in words is "nine billion, nine hundred seventy-six million, seven hundred seventy-nine thousand, two hundred thirty-two".