999446448 has 480 divisors, whose sum is σ = 3664654336. Its totient is φ = 228096000.

The previous prime is 999446411. The next prime is 999446449. The reversal of 999446448 is 844644999.

Its product of digits (8957952) is a multiple of the sum of its prime divisors (128).

It is not an unprimeable number, because it can be changed into a prime (999446449) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16384338 + ... + 16384398.

Almost surely, 2^999446448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999446448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1832327168).

999446448 is an abundant number, since it is smaller than the sum of its proper divisors (2665207888).

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

999446448 is a wasteful number, since it uses less digits than its factorization.

999446448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 128 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 57.

The square root of 999446448 is about 31614.0229645011. The cubic root of 999446448 is about 999.8154486095.

The spelling of 999446448 in words is "nine hundred ninety-nine million, four hundred forty-six thousand, four hundred forty-eight".