999296123904 has 693 divisors, whose sum is σ = 3280014971823. Its totient is φ = 304020946944.

The previous prime is 999296123843. The next prime is 999296123911. The reversal of 999296123904 is 409321692999.

The square root of 999296123904 is 999648.

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

999296123904 is a `hidden beast` number, since 9 + 9 + 9 + 2 + 9 + 612 + 3 + 9 + 0 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 436868121600 + 562428002304 = 660960^2 + 749952^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 11228046292 + ... + 11228046380.

Almost surely, 2^999296123904 is an apocalyptic number.

999296123904 is the 999648-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999296123904

999296123904 is an abundant number, since it is smaller than the sum of its proper divisors (2280718847919).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999296123904 is an frugal number, since it uses more digits than its factorization.

999296123904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 17006112, while the sum is 63.

The spelling of 999296123904 in words is "nine hundred ninety-nine billion, two hundred ninety-six million, one hundred twenty-three thousand, nine hundred four".