9999995924 has 6 divisors (see below), whose sum is σ = 17499992874. Its totient is φ = 4999997960.

The previous prime is 9999995911. The next prime is 9999995953. The reversal of 9999995924 is 4295999999.

It can be written as a sum of positive squares in only one way, i.e., 5165296900 + 4834699024 = 71870^2 + 69532^2 .

It is a super-2 number, since 2×9999995924² (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 as a sum of consecutive naturals, namely, 1249999487 + ... + 1249999494.

It is an arithmetic number, because the mean of its divisors is an integer number (2916665479).

Almost surely, 2^9999995924 is an apocalyptic number.

It is an amenable number.

9999995924 is a deficient number, since it is larger than the sum of its proper divisors (7499996950).

9999995924 is a wasteful number, since it uses less digits than its factorization.

9999995924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499998985 (or 2499998983 counting only the distinct ones).

The product of its digits is 191318760, while the sum is 74.

The square root of 9999995924 is about 99999.9796199979. The cubic root of 9999995924 is about 2154.4343973160.

The spelling of 9999995924 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-five thousand, nine hundred twenty-four".