990476448 has 96 divisors (see below), whose sum is σ = 2865272256. Its totient is φ = 297658368.

The previous prime is 990476447. The next prime is 990476471. The reversal of 990476448 is 844674099.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 990476448.

It is not an unprimeable number, because it can be changed into a prime (990476447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44436 + ... + 62892.

It is an arithmetic number, because the mean of its divisors is an integer number (29846586).

Almost surely, 2^990476448 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 990476448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432636128).

990476448 is an abundant number, since it is smaller than the sum of its proper divisors (1874795808).

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

990476448 is a wasteful number, since it uses less digits than its factorization.

990476448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18526 (or 18518 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 990476448 is about 31471.8357901156. The cubic root of 990476448 is about 996.8153514465.

The spelling of 990476448 in words is "nine hundred ninety million, four hundred seventy-six thousand, four hundred forty-eight".