9924394899 has 16 divisors (see below), whose sum is σ = 13490312192. Its totient is φ = 6488257248.

The previous prime is 9924394889. The next prime is 9924394903. The reversal of 9924394899 is 9984934299.

It is not a de Polignac number, because 9924394899 - 2⁸ = 9924394643 is a prime.

It is a super-2 number, since 2×9924394899² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9924394859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65884 + ... + 155529.

It is an arithmetic number, because the mean of its divisors is an integer number (843144512).

Almost surely, 2^9924394899 is an apocalyptic number.

9924394899 is a deficient number, since it is larger than the sum of its proper divisors (3565917293).

9924394899 is a wasteful number, since it uses less digits than its factorization.

9924394899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221706.

The product of its digits is 45349632, while the sum is 66.

The square root of 9924394899 is about 99621.2572647023. The cubic root of 9924394899 is about 2148.9914071536.

The spelling of 9924394899 in words is "nine billion, nine hundred twenty-four million, three hundred ninety-four thousand, eight hundred ninety-nine".