9999990424 has 16 divisors (see below), whose sum is σ = 19396533600. Its totient is φ = 4827581472.

The previous prime is 9999990419. The next prime is 9999990433. The reversal of 9999990424 is 4240999999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21551472 + ... + 21551935.

It is an arithmetic number, because the mean of its divisors is an integer number (1212283350).

Almost surely, 2^9999990424 is an apocalyptic number.

It is an amenable number.

9999990424 is a deficient number, since it is larger than the sum of its proper divisors (9396543176).

9999990424 is a wasteful number, since it uses less digits than its factorization.

9999990424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43103442 (or 43103438 counting only the distinct ones).

The product of its (nonzero) digits is 17006112, while the sum is 64.

The square root of 9999990424 is about 99999.9521199885. The cubic root of 9999990424 is about 2154.4340023361.

The spelling of 9999990424 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety thousand, four hundred twenty-four".