9925979012 has 24 divisors (see below), whose sum is σ = 18339985440. Its totient is φ = 4687562880.

The previous prime is 9925978967. The next prime is 9925979017. The reversal of 9925979012 is 2109795299.

It is a super-2 number, since 2×9925979012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9925979017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172133 + ... + 222444.

It is an arithmetic number, because the mean of its divisors is an integer number (764166060).

Almost surely, 2^9925979012 is an apocalyptic number.

It is an amenable number.

9925979012 is a deficient number, since it is larger than the sum of its proper divisors (8414006428).

9925979012 is a wasteful number, since it uses less digits than its factorization.

9925979012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394931 (or 394929 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 9925979012 is about 99629.2076250735. The cubic root of 9925979012 is about 2149.1057403749.

The spelling of 9925979012 in words is "nine billion, nine hundred twenty-five million, nine hundred seventy-nine thousand, twelve".