99623559424 has 27 divisors (see below), whose sum is σ = 198868045327. Its totient is φ = 49809254656.

The previous prime is 99623559397. The next prime is 99623559439. The reversal of 99623559424 is 42495532699.

The square root of 99623559424 is 315632.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian 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 in 2 ways as a sum of consecutive naturals, for example, 5040249 + ... + 5059975.

Almost surely, 2^99623559424 is an apocalyptic number.

99623559424 is the 315632-nd square number.

It is an amenable number.

99623559424 is a deficient number, since it is larger than the sum of its proper divisors (99244485903).

99623559424 is an frugal number, since it uses more digits than its factorization.

99623559424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39470 (or 19729 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 58.

The spelling of 99623559424 in words is "ninety-nine billion, six hundred twenty-three million, five hundred fifty-nine thousand, four hundred twenty-four".